Home / 11,348.64-15,648.21-7,990.38

Finding the Fourth Proportional to 11,348.64, 15,648.21 and 7,990.38

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Solution

The fourth proportional to 11,348.64, 15,648.21 and 7,990.38 is: 11,017.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,348.64 : 15,648.21 = 7,990.38 : x
  2. Step 2: Convert to fraction form
    11,348.64/15,648.21 = 7,990.38/x
  3. Step 3: Cross multiply
    11,348.64x = 15,648.21 × 7,990.38
  4. Step 4: Simplify right side
    11,348.64x = 125,035,144.22
  5. Step 5: Solve for x
    x = 125,035,144.22/11,348.64
  6. Step 6: Final answer
    x = 11,017.63

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Half scale
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Double scale
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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.