Home / 21,250.66-31,842.68-13,442.98

Finding the Fourth Proportional to 21,250.66, 31,842.68 and 13,442.98

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Solution

The fourth proportional to 21,250.66, 31,842.68 and 13,442.98 is: 20,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.66 : 31,842.68 = 13,442.98 : x
  2. Step 2: Convert to fraction form
    21,250.66/31,842.68 = 13,442.98/x
  3. Step 3: Cross multiply
    21,250.66x = 31,842.68 × 13,442.98
  4. Step 4: Simplify right side
    21,250.66x = 428,060,510.39
  5. Step 5: Solve for x
    x = 428,060,510.39/21,250.66
  6. Step 6: Final answer
    x = 20,143.40

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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.