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Finding the Fourth Proportional to 22,007.70, 30,369.60 and 13,508.10

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Solution

The fourth proportional to 22,007.70, 30,369.60 and 13,508.10 is: 18,640.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,007.70 : 30,369.60 = 13,508.10 : x
  2. Step 2: Convert to fraction form
    22,007.70/30,369.60 = 13,508.10/x
  3. Step 3: Cross multiply
    22,007.70x = 30,369.60 × 13,508.10
  4. Step 4: Simplify right side
    22,007.70x = 410,235,593.76
  5. Step 5: Solve for x
    x = 410,235,593.76/22,007.70
  6. Step 6: Final answer
    x = 18,640.55

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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.