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Finding the Fourth Proportional to 20,687.52, 31,034.16 and 7,546.08

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Solution

The fourth proportional to 20,687.52, 31,034.16 and 7,546.08 is: 11,320.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,687.52 : 31,034.16 = 7,546.08 : x
  2. Step 2: Convert to fraction form
    20,687.52/31,034.16 = 7,546.08/x
  3. Step 3: Cross multiply
    20,687.52x = 31,034.16 × 7,546.08
  4. Step 4: Simplify right side
    20,687.52x = 234,186,254.09
  5. Step 5: Solve for x
    x = 234,186,254.09/20,687.52
  6. Step 6: Final answer
    x = 11,320.17

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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.