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Finding the Fourth Proportional to 39,391.62, 59,087.40 and 11,689.62

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Solution

The fourth proportional to 39,391.62, 59,087.40 and 11,689.62 is: 17,534.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,391.62 : 59,087.40 = 11,689.62 : x
  2. Step 2: Convert to fraction form
    39,391.62/59,087.40 = 11,689.62/x
  3. Step 3: Cross multiply
    39,391.62x = 59,087.40 × 11,689.62
  4. Step 4: Simplify right side
    39,391.62x = 690,709,252.79
  5. Step 5: Solve for x
    x = 690,709,252.79/39,391.62
  6. Step 6: Final answer
    x = 17,534.42

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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.