Home / 21,385.56-32,099.12-15,500.31

Finding the Fourth Proportional to 21,385.56, 32,099.12 and 15,500.31

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Solution

The fourth proportional to 21,385.56, 32,099.12 and 15,500.31 is: 23,265.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,385.56 : 32,099.12 = 15,500.31 : x
  2. Step 2: Convert to fraction form
    21,385.56/32,099.12 = 15,500.31/x
  3. Step 3: Cross multiply
    21,385.56x = 32,099.12 × 15,500.31
  4. Step 4: Simplify right side
    21,385.56x = 497,546,170.98
  5. Step 5: Solve for x
    x = 497,546,170.98/21,385.56
  6. Step 6: Final answer
    x = 23,265.52

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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.