Home / 36,489.04-54,720.12-13,109.20

Finding the Fourth Proportional to 36,489.04, 54,720.12 and 13,109.20

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Solution

The fourth proportional to 36,489.04, 54,720.12 and 13,109.20 is: 19,658.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,489.04 : 54,720.12 = 13,109.20 : x
  2. Step 2: Convert to fraction form
    36,489.04/54,720.12 = 13,109.20/x
  3. Step 3: Cross multiply
    36,489.04x = 54,720.12 × 13,109.20
  4. Step 4: Simplify right side
    36,489.04x = 717,336,997.10
  5. Step 5: Solve for x
    x = 717,336,997.10/36,489.04
  6. Step 6: Final answer
    x = 19,658.97

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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.