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Finding the Fourth Proportional to 15,929.70, 23,861.70 and 9,335.90

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Solution

The fourth proportional to 15,929.70, 23,861.70 and 9,335.90 is: 13,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,929.70 : 23,861.70 = 9,335.90 : x
  2. Step 2: Convert to fraction form
    15,929.70/23,861.70 = 9,335.90/x
  3. Step 3: Cross multiply
    15,929.70x = 23,861.70 × 9,335.90
  4. Step 4: Simplify right side
    15,929.70x = 222,770,445.03
  5. Step 5: Solve for x
    x = 222,770,445.03/15,929.70
  6. Step 6: Final answer
    x = 13,984.60

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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.