Home / 21,161.54-31,748.52-9,472.16

Finding the Fourth Proportional to 21,161.54, 31,748.52 and 9,472.16

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Solution

The fourth proportional to 21,161.54, 31,748.52 and 9,472.16 is: 14,211.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.54 : 31,748.52 = 9,472.16 : x
  2. Step 2: Convert to fraction form
    21,161.54/31,748.52 = 9,472.16/x
  3. Step 3: Cross multiply
    21,161.54x = 31,748.52 × 9,472.16
  4. Step 4: Simplify right side
    21,161.54x = 300,727,061.20
  5. Step 5: Solve for x
    x = 300,727,061.20/21,161.54
  6. Step 6: Final answer
    x = 14,211.02

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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.