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Finding the Fourth Proportional to 15,339, 23,013.90 and 7,553.28

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Solution

The fourth proportional to 15,339, 23,013.90 and 7,553.28 is: 11,332.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339 : 23,013.90 = 7,553.28 : x
  2. Step 2: Convert to fraction form
    15,339/23,013.90 = 7,553.28/x
  3. Step 3: Cross multiply
    15,339x = 23,013.90 × 7,553.28
  4. Step 4: Simplify right side
    15,339x = 173,830,430.59
  5. Step 5: Solve for x
    x = 173,830,430.59/15,339
  6. Step 6: Final answer
    x = 11,332.58

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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.