Home / 38,274.93-57,422.12-11,979.90

Finding the Fourth Proportional to 38,274.93, 57,422.12 and 11,979.90

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Solution

The fourth proportional to 38,274.93, 57,422.12 and 11,979.90 is: 17,972.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,274.93 : 57,422.12 = 11,979.90 : x
  2. Step 2: Convert to fraction form
    38,274.93/57,422.12 = 11,979.90/x
  3. Step 3: Cross multiply
    38,274.93x = 57,422.12 × 11,979.90
  4. Step 4: Simplify right side
    38,274.93x = 687,911,195.49
  5. Step 5: Solve for x
    x = 687,911,195.49/38,274.93
  6. Step 6: Final answer
    x = 17,972.89

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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.