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Finding the Fourth Proportional to 15,765, 23,647.50 and 6,531.24

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Solution

The fourth proportional to 15,765, 23,647.50 and 6,531.24 is: 9,796.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,765 : 23,647.50 = 6,531.24 : x
  2. Step 2: Convert to fraction form
    15,765/23,647.50 = 6,531.24/x
  3. Step 3: Cross multiply
    15,765x = 23,647.50 × 6,531.24
  4. Step 4: Simplify right side
    15,765x = 154,447,497.90
  5. Step 5: Solve for x
    x = 154,447,497.90/15,765
  6. Step 6: Final answer
    x = 9,796.86

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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.