Home / 20,560.80-30,679.68-19,306.92

Finding the Fourth Proportional to 20,560.80, 30,679.68 and 19,306.92

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Solution

The fourth proportional to 20,560.80, 30,679.68 and 19,306.92 is: 28,808.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.80 : 30,679.68 = 19,306.92 : x
  2. Step 2: Convert to fraction form
    20,560.80/30,679.68 = 19,306.92/x
  3. Step 3: Cross multiply
    20,560.80x = 30,679.68 × 19,306.92
  4. Step 4: Simplify right side
    20,560.80x = 592,330,127.39
  5. Step 5: Solve for x
    x = 592,330,127.39/20,560.80
  6. Step 6: Final answer
    x = 28,808.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.