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Finding the Fourth Proportional to 15,025.16, 20,732.87 and 8,309.87

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Solution

The fourth proportional to 15,025.16, 20,732.87 and 8,309.87 is: 11,466.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,025.16 : 20,732.87 = 8,309.87 : x
  2. Step 2: Convert to fraction form
    15,025.16/20,732.87 = 8,309.87/x
  3. Step 3: Cross multiply
    15,025.16x = 20,732.87 × 8,309.87
  4. Step 4: Simplify right side
    15,025.16x = 172,287,309.21
  5. Step 5: Solve for x
    x = 172,287,309.21/15,025.16
  6. Step 6: Final answer
    x = 11,466.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.