Home / 20,711.77-28,548.10-14,654.18

Finding the Fourth Proportional to 20,711.77, 28,548.10 and 14,654.18

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Solution

The fourth proportional to 20,711.77, 28,548.10 and 14,654.18 is: 20,198.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.77 : 28,548.10 = 14,654.18 : x
  2. Step 2: Convert to fraction form
    20,711.77/28,548.10 = 14,654.18/x
  3. Step 3: Cross multiply
    20,711.77x = 28,548.10 × 14,654.18
  4. Step 4: Simplify right side
    20,711.77x = 418,349,003.32
  5. Step 5: Solve for x
    x = 418,349,003.32/20,711.77
  6. Step 6: Final answer
    x = 20,198.61

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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.