Home / 20,762.92-28,652.43-11,331.55

Finding the Fourth Proportional to 20,762.92, 28,652.43 and 11,331.55

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Solution

The fourth proportional to 20,762.92, 28,652.43 and 11,331.55 is: 15,637.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.92 : 28,652.43 = 11,331.55 : x
  2. Step 2: Convert to fraction form
    20,762.92/28,652.43 = 11,331.55/x
  3. Step 3: Cross multiply
    20,762.92x = 28,652.43 × 11,331.55
  4. Step 4: Simplify right side
    20,762.92x = 324,676,443.17
  5. Step 5: Solve for x
    x = 324,676,443.17/20,762.92
  6. Step 6: Final answer
    x = 15,637.32

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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.