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Finding the Fourth Proportional to 39,960, 59,942.88 and 15,336

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Solution

The fourth proportional to 39,960, 59,942.88 and 15,336 is: 23,005.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,960 : 59,942.88 = 15,336 : x
  2. Step 2: Convert to fraction form
    39,960/59,942.88 = 15,336/x
  3. Step 3: Cross multiply
    39,960x = 59,942.88 × 15,336
  4. Step 4: Simplify right side
    39,960x = 919,284,007.68
  5. Step 5: Solve for x
    x = 919,284,007.68/39,960
  6. Step 6: Final answer
    x = 23,005.11

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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.