Home / 21,006.97-31,493.33-9,769.39

Finding the Fourth Proportional to 21,006.97, 31,493.33 and 9,769.39

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Solution

The fourth proportional to 21,006.97, 31,493.33 and 9,769.39 is: 14,646.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.97 : 31,493.33 = 9,769.39 : x
  2. Step 2: Convert to fraction form
    21,006.97/31,493.33 = 9,769.39/x
  3. Step 3: Cross multiply
    21,006.97x = 31,493.33 × 9,769.39
  4. Step 4: Simplify right side
    21,006.97x = 307,670,677.48
  5. Step 5: Solve for x
    x = 307,670,677.48/21,006.97
  6. Step 6: Final answer
    x = 14,646.13

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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.