Home / 13,553.42-20,330.15-8,902.80

Finding the Fourth Proportional to 13,553.42, 20,330.15 and 8,902.80

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Solution

The fourth proportional to 13,553.42, 20,330.15 and 8,902.80 is: 13,354.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.42 : 20,330.15 = 8,902.80 : x
  2. Step 2: Convert to fraction form
    13,553.42/20,330.15 = 8,902.80/x
  3. Step 3: Cross multiply
    13,553.42x = 20,330.15 × 8,902.80
  4. Step 4: Simplify right side
    13,553.42x = 180,995,214.91
  5. Step 5: Solve for x
    x = 180,995,214.91/13,553.42
  6. Step 6: Final answer
    x = 13,354.21

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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.