Home / 10,221.30-15,345.99-5,294.34

Finding the Fourth Proportional to 10,221.30, 15,345.99 and 5,294.34

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Solution

The fourth proportional to 10,221.30, 15,345.99 and 5,294.34 is: 7,948.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221.30 : 15,345.99 = 5,294.34 : x
  2. Step 2: Convert to fraction form
    10,221.30/15,345.99 = 5,294.34/x
  3. Step 3: Cross multiply
    10,221.30x = 15,345.99 × 5,294.34
  4. Step 4: Simplify right side
    10,221.30x = 81,246,888.70
  5. Step 5: Solve for x
    x = 81,246,888.70/10,221.30
  6. Step 6: Final answer
    x = 7,948.78

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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.