Home / 20,728.98-28,596.92-14,012.19

Finding the Fourth Proportional to 20,728.98, 28,596.92 and 14,012.19

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Solution

The fourth proportional to 20,728.98, 28,596.92 and 14,012.19 is: 19,330.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.98 : 28,596.92 = 14,012.19 : x
  2. Step 2: Convert to fraction form
    20,728.98/28,596.92 = 14,012.19/x
  3. Step 3: Cross multiply
    20,728.98x = 28,596.92 × 14,012.19
  4. Step 4: Simplify right side
    20,728.98x = 400,705,406.39
  5. Step 5: Solve for x
    x = 400,705,406.39/20,728.98
  6. Step 6: Final answer
    x = 19,330.69

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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.