Home / 20,797.46-28,691.90-15,119.76

Finding the Fourth Proportional to 20,797.46, 28,691.90 and 15,119.76

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Solution

The fourth proportional to 20,797.46, 28,691.90 and 15,119.76 is: 20,859.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.46 : 28,691.90 = 15,119.76 : x
  2. Step 2: Convert to fraction form
    20,797.46/28,691.90 = 15,119.76/x
  3. Step 3: Cross multiply
    20,797.46x = 28,691.90 × 15,119.76
  4. Step 4: Simplify right side
    20,797.46x = 433,814,641.94
  5. Step 5: Solve for x
    x = 433,814,641.94/20,797.46
  6. Step 6: Final answer
    x = 20,859.02

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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.