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Finding the Fourth Proportional to 21,253.97, 31,854.80 and 9,394.97

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Solution

The fourth proportional to 21,253.97, 31,854.80 and 9,394.97 is: 14,080.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,253.97 : 31,854.80 = 9,394.97 : x
  2. Step 2: Convert to fraction form
    21,253.97/31,854.80 = 9,394.97/x
  3. Step 3: Cross multiply
    21,253.97x = 31,854.80 × 9,394.97
  4. Step 4: Simplify right side
    21,253.97x = 299,274,684.11
  5. Step 5: Solve for x
    x = 299,274,684.11/21,253.97
  6. Step 6: Final answer
    x = 14,080.89

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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.