Home / 21,761.80-32,577.90-12,992.20

Finding the Fourth Proportional to 21,761.80, 32,577.90 and 12,992.20

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Solution

The fourth proportional to 21,761.80, 32,577.90 and 12,992.20 is: 19,449.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,761.80 : 32,577.90 = 12,992.20 : x
  2. Step 2: Convert to fraction form
    21,761.80/32,577.90 = 12,992.20/x
  3. Step 3: Cross multiply
    21,761.80x = 32,577.90 × 12,992.20
  4. Step 4: Simplify right side
    21,761.80x = 423,258,592.38
  5. Step 5: Solve for x
    x = 423,258,592.38/21,761.80
  6. Step 6: Final answer
    x = 19,449.61

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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.