Home / 21,251.47-31,877.16-10,124.41

Finding the Fourth Proportional to 21,251.47, 31,877.16 and 10,124.41

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Solution

The fourth proportional to 21,251.47, 31,877.16 and 10,124.41 is: 15,186.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.47 : 31,877.16 = 10,124.41 : x
  2. Step 2: Convert to fraction form
    21,251.47/31,877.16 = 10,124.41/x
  3. Step 3: Cross multiply
    21,251.47x = 31,877.16 × 10,124.41
  4. Step 4: Simplify right side
    21,251.47x = 322,737,437.48
  5. Step 5: Solve for x
    x = 322,737,437.48/21,251.47
  6. Step 6: Final answer
    x = 15,186.59

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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.