Home / 38,489.76-57,739.50-12,185.10

Finding the Fourth Proportional to 38,489.76, 57,739.50 and 12,185.10

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Solution

The fourth proportional to 38,489.76, 57,739.50 and 12,185.10 is: 18,279.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,489.76 : 57,739.50 = 12,185.10 : x
  2. Step 2: Convert to fraction form
    38,489.76/57,739.50 = 12,185.10/x
  3. Step 3: Cross multiply
    38,489.76x = 57,739.50 × 12,185.10
  4. Step 4: Simplify right side
    38,489.76x = 703,561,581.45
  5. Step 5: Solve for x
    x = 703,561,581.45/38,489.76
  6. Step 6: Final answer
    x = 18,279.19

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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.