Home / 45,132.12-67,709.12-13,542.12

Finding the Fourth Proportional to 45,132.12, 67,709.12 and 13,542.12

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Solution

The fourth proportional to 45,132.12, 67,709.12 and 13,542.12 is: 20,316.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,132.12 : 67,709.12 = 13,542.12 : x
  2. Step 2: Convert to fraction form
    45,132.12/67,709.12 = 13,542.12/x
  3. Step 3: Cross multiply
    45,132.12x = 67,709.12 × 13,542.12
  4. Step 4: Simplify right side
    45,132.12x = 916,924,960.42
  5. Step 5: Solve for x
    x = 916,924,960.42/45,132.12
  6. Step 6: Final answer
    x = 20,316.46

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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.