Home / 21,134.52-31,699.08-5,553.36

Finding the Fourth Proportional to 21,134.52, 31,699.08 and 5,553.36

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Solution

The fourth proportional to 21,134.52, 31,699.08 and 5,553.36 is: 8,329.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.52 : 31,699.08 = 5,553.36 : x
  2. Step 2: Convert to fraction form
    21,134.52/31,699.08 = 5,553.36/x
  3. Step 3: Cross multiply
    21,134.52x = 31,699.08 × 5,553.36
  4. Step 4: Simplify right side
    21,134.52x = 176,036,402.91
  5. Step 5: Solve for x
    x = 176,036,402.91/21,134.52
  6. Step 6: Final answer
    x = 8,329.33

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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.