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Finding the Fourth Proportional to 39,330, 59,006.52 and 11,628.72

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Solution

The fourth proportional to 39,330, 59,006.52 and 11,628.72 is: 17,446.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,330 : 59,006.52 = 11,628.72 : x
  2. Step 2: Convert to fraction form
    39,330/59,006.52 = 11,628.72/x
  3. Step 3: Cross multiply
    39,330x = 59,006.52 × 11,628.72
  4. Step 4: Simplify right side
    39,330x = 686,170,299.25
  5. Step 5: Solve for x
    x = 686,170,299.25/39,330
  6. Step 6: Final answer
    x = 17,446.49

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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.