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Finding the Fourth Proportional to 15,008.87, 20,713.22 and 9,965.19

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Solution

The fourth proportional to 15,008.87, 20,713.22 and 9,965.19 is: 13,752.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,008.87 : 20,713.22 = 9,965.19 : x
  2. Step 2: Convert to fraction form
    15,008.87/20,713.22 = 9,965.19/x
  3. Step 3: Cross multiply
    15,008.87x = 20,713.22 × 9,965.19
  4. Step 4: Simplify right side
    15,008.87x = 206,411,122.99
  5. Step 5: Solve for x
    x = 206,411,122.99/15,008.87
  6. Step 6: Final answer
    x = 13,752.61

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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.