Home / 39,292.74-58,939.11-12,990.42

Finding the Fourth Proportional to 39,292.74, 58,939.11 and 12,990.42

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Solution

The fourth proportional to 39,292.74, 58,939.11 and 12,990.42 is: 19,485.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,292.74 : 58,939.11 = 12,990.42 : x
  2. Step 2: Convert to fraction form
    39,292.74/58,939.11 = 12,990.42/x
  3. Step 3: Cross multiply
    39,292.74x = 58,939.11 × 12,990.42
  4. Step 4: Simplify right side
    39,292.74x = 765,643,793.33
  5. Step 5: Solve for x
    x = 765,643,793.33/39,292.74
  6. Step 6: Final answer
    x = 19,485.63

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Similar ratio
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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.