Home / 20,422.94-28,183.44-11,348.25

Finding the Fourth Proportional to 20,422.94, 28,183.44 and 11,348.25

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Solution

The fourth proportional to 20,422.94, 28,183.44 and 11,348.25 is: 15,660.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.94 : 28,183.44 = 11,348.25 : x
  2. Step 2: Convert to fraction form
    20,422.94/28,183.44 = 11,348.25/x
  3. Step 3: Cross multiply
    20,422.94x = 28,183.44 × 11,348.25
  4. Step 4: Simplify right side
    20,422.94x = 319,832,818.38
  5. Step 5: Solve for x
    x = 319,832,818.38/20,422.94
  6. Step 6: Final answer
    x = 15,660.47

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Find fourth proportional to 10,211.47, 14,091.72 and 5,674.13
Half scale
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Double scale
Find fourth proportional to 20,423.94, 28,184.82 and 11,349.25
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.