Home / 21,442.20-32,163.92-18,302.40

Finding the Fourth Proportional to 21,442.20, 32,163.92 and 18,302.40

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Solution

The fourth proportional to 21,442.20, 32,163.92 and 18,302.40 is: 27,454.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,442.20 : 32,163.92 = 18,302.40 : x
  2. Step 2: Convert to fraction form
    21,442.20/32,163.92 = 18,302.40/x
  3. Step 3: Cross multiply
    21,442.20x = 32,163.92 × 18,302.40
  4. Step 4: Simplify right side
    21,442.20x = 588,676,929.41
  5. Step 5: Solve for x
    x = 588,676,929.41/21,442.20
  6. Step 6: Final answer
    x = 27,454.13

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1.5x scale

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.