Home / 21,909.30-32,877.45-8,760.30

Finding the Fourth Proportional to 21,909.30, 32,877.45 and 8,760.30

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Solution

The fourth proportional to 21,909.30, 32,877.45 and 8,760.30 is: 13,145.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.30 : 32,877.45 = 8,760.30 : x
  2. Step 2: Convert to fraction form
    21,909.30/32,877.45 = 8,760.30/x
  3. Step 3: Cross multiply
    21,909.30x = 32,877.45 × 8,760.30
  4. Step 4: Simplify right side
    21,909.30x = 288,016,325.24
  5. Step 5: Solve for x
    x = 288,016,325.24/21,909.30
  6. Step 6: Final answer
    x = 13,145.85

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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.