Home / 25,139.24-34,663.62-20,587.72

Finding the Fourth Proportional to 25,139.24, 34,663.62 and 20,587.72

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Solution

The fourth proportional to 25,139.24, 34,663.62 and 20,587.72 is: 28,387.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,139.24 : 34,663.62 = 20,587.72 : x
  2. Step 2: Convert to fraction form
    25,139.24/34,663.62 = 20,587.72/x
  3. Step 3: Cross multiply
    25,139.24x = 34,663.62 × 20,587.72
  4. Step 4: Simplify right side
    25,139.24x = 713,644,902.75
  5. Step 5: Solve for x
    x = 713,644,902.75/25,139.24
  6. Step 6: Final answer
    x = 28,387.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.