Home / 21,720.11-32,520.90-16,439.15

Finding the Fourth Proportional to 21,720.11, 32,520.90 and 16,439.15

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Solution

The fourth proportional to 21,720.11, 32,520.90 and 16,439.15 is: 24,613.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.11 : 32,520.90 = 16,439.15 : x
  2. Step 2: Convert to fraction form
    21,720.11/32,520.90 = 16,439.15/x
  3. Step 3: Cross multiply
    21,720.11x = 32,520.90 × 16,439.15
  4. Step 4: Simplify right side
    21,720.11x = 534,615,852.28
  5. Step 5: Solve for x
    x = 534,615,852.28/21,720.11
  6. Step 6: Final answer
    x = 24,613.87

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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.