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Finding the Fourth Proportional to 20,253.77, 27,932.03 and 12,700.93

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Solution

The fourth proportional to 20,253.77, 27,932.03 and 12,700.93 is: 17,515.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,253.77 : 27,932.03 = 12,700.93 : x
  2. Step 2: Convert to fraction form
    20,253.77/27,932.03 = 12,700.93/x
  3. Step 3: Cross multiply
    20,253.77x = 27,932.03 × 12,700.93
  4. Step 4: Simplify right side
    20,253.77x = 354,762,618.13
  5. Step 5: Solve for x
    x = 354,762,618.13/20,253.77
  6. Step 6: Final answer
    x = 17,515.88

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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.