Home / 21,254.38-31,867.90-10,160.82

Finding the Fourth Proportional to 21,254.38, 31,867.90 and 10,160.82

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Solution

The fourth proportional to 21,254.38, 31,867.90 and 10,160.82 is: 15,234.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,254.38 : 31,867.90 = 10,160.82 : x
  2. Step 2: Convert to fraction form
    21,254.38/31,867.90 = 10,160.82/x
  3. Step 3: Cross multiply
    21,254.38x = 31,867.90 × 10,160.82
  4. Step 4: Simplify right side
    21,254.38x = 323,803,970.28
  5. Step 5: Solve for x
    x = 323,803,970.28/21,254.38
  6. Step 6: Final answer
    x = 15,234.70

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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.