Home / 27,098.80-40,575.30-21,218.20

Finding the Fourth Proportional to 27,098.80, 40,575.30 and 21,218.20

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Solution

The fourth proportional to 27,098.80, 40,575.30 and 21,218.20 is: 31,770.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,098.80 : 40,575.30 = 21,218.20 : x
  2. Step 2: Convert to fraction form
    27,098.80/40,575.30 = 21,218.20/x
  3. Step 3: Cross multiply
    27,098.80x = 40,575.30 × 21,218.20
  4. Step 4: Simplify right side
    27,098.80x = 860,934,830.46
  5. Step 5: Solve for x
    x = 860,934,830.46/27,098.80
  6. Step 6: Final answer
    x = 31,770.22

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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.