Home / 20,337.44-28,066.20-11,384.90

Finding the Fourth Proportional to 20,337.44, 28,066.20 and 11,384.90

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Solution

The fourth proportional to 20,337.44, 28,066.20 and 11,384.90 is: 15,711.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,337.44 : 28,066.20 = 11,384.90 : x
  2. Step 2: Convert to fraction form
    20,337.44/28,066.20 = 11,384.90/x
  3. Step 3: Cross multiply
    20,337.44x = 28,066.20 × 11,384.90
  4. Step 4: Simplify right side
    20,337.44x = 319,530,880.38
  5. Step 5: Solve for x
    x = 319,530,880.38/20,337.44
  6. Step 6: Final answer
    x = 15,711.46

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Half scale
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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.