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Finding the Fourth Proportional to 22,253.88, 30,713.78 and 12,693.78

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Solution

The fourth proportional to 22,253.88, 30,713.78 and 12,693.78 is: 17,519.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,253.88 : 30,713.78 = 12,693.78 : x
  2. Step 2: Convert to fraction form
    22,253.88/30,713.78 = 12,693.78/x
  3. Step 3: Cross multiply
    22,253.88x = 30,713.78 × 12,693.78
  4. Step 4: Simplify right side
    22,253.88x = 389,873,966.29
  5. Step 5: Solve for x
    x = 389,873,966.29/22,253.88
  6. Step 6: Final answer
    x = 17,519.37

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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.