Home / 21,294.18-31,918.33-10,177.23

Finding the Fourth Proportional to 21,294.18, 31,918.33 and 10,177.23

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Solution

The fourth proportional to 21,294.18, 31,918.33 and 10,177.23 is: 15,254.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,294.18 : 31,918.33 = 10,177.23 : x
  2. Step 2: Convert to fraction form
    21,294.18/31,918.33 = 10,177.23/x
  3. Step 3: Cross multiply
    21,294.18x = 31,918.33 × 10,177.23
  4. Step 4: Simplify right side
    21,294.18x = 324,840,185.63
  5. Step 5: Solve for x
    x = 324,840,185.63/21,294.18
  6. Step 6: Final answer
    x = 15,254.88

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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.