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Finding the Fourth Proportional to 22,430.70, 33,609.15 and 13,639.14

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Solution

The fourth proportional to 22,430.70, 33,609.15 and 13,639.14 is: 20,436.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,430.70 : 33,609.15 = 13,639.14 : x
  2. Step 2: Convert to fraction form
    22,430.70/33,609.15 = 13,639.14/x
  3. Step 3: Cross multiply
    22,430.70x = 33,609.15 × 13,639.14
  4. Step 4: Simplify right side
    22,430.70x = 458,399,902.13
  5. Step 5: Solve for x
    x = 458,399,902.13/22,430.70
  6. Step 6: Final answer
    x = 20,436.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.