Home / 25,717.68-38,557.08-20,520.72

Finding the Fourth Proportional to 25,717.68, 38,557.08 and 20,520.72

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Solution

The fourth proportional to 25,717.68, 38,557.08 and 20,520.72 is: 30,765.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,717.68 : 38,557.08 = 20,520.72 : x
  2. Step 2: Convert to fraction form
    25,717.68/38,557.08 = 20,520.72/x
  3. Step 3: Cross multiply
    25,717.68x = 38,557.08 × 20,520.72
  4. Step 4: Simplify right side
    25,717.68x = 791,219,042.70
  5. Step 5: Solve for x
    x = 791,219,042.70/25,717.68
  6. Step 6: Final answer
    x = 30,765.57

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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.