Home / 19,979.20-29,922.08-15,791.10

Finding the Fourth Proportional to 19,979.20, 29,922.08 and 15,791.10

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Solution

The fourth proportional to 19,979.20, 29,922.08 and 15,791.10 is: 23,649.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,979.20 : 29,922.08 = 15,791.10 : x
  2. Step 2: Convert to fraction form
    19,979.20/29,922.08 = 15,791.10/x
  3. Step 3: Cross multiply
    19,979.20x = 29,922.08 × 15,791.10
  4. Step 4: Simplify right side
    19,979.20x = 472,502,557.49
  5. Step 5: Solve for x
    x = 472,502,557.49/19,979.20
  6. Step 6: Final answer
    x = 23,649.72

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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.