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Finding the Fourth Proportional to 21,777.47, 30,062.11 and 14,713.46

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Solution

The fourth proportional to 21,777.47, 30,062.11 and 14,713.46 is: 20,310.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.47 : 30,062.11 = 14,713.46 : x
  2. Step 2: Convert to fraction form
    21,777.47/30,062.11 = 14,713.46/x
  3. Step 3: Cross multiply
    21,777.47x = 30,062.11 × 14,713.46
  4. Step 4: Simplify right side
    21,777.47x = 442,317,691.37
  5. Step 5: Solve for x
    x = 442,317,691.37/21,777.47
  6. Step 6: Final answer
    x = 20,310.79

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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.