Home / 21,292.82-31,941.20-7,248.13

Finding the Fourth Proportional to 21,292.82, 31,941.20 and 7,248.13

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Solution

The fourth proportional to 21,292.82, 31,941.20 and 7,248.13 is: 10,872.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.82 : 31,941.20 = 7,248.13 : x
  2. Step 2: Convert to fraction form
    21,292.82/31,941.20 = 7,248.13/x
  3. Step 3: Cross multiply
    21,292.82x = 31,941.20 × 7,248.13
  4. Step 4: Simplify right side
    21,292.82x = 231,513,908.22
  5. Step 5: Solve for x
    x = 231,513,908.22/21,292.82
  6. Step 6: Final answer
    x = 10,872.86

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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.