Home / 20,812.96-28,743.68-17,974.72

Finding the Fourth Proportional to 20,812.96, 28,743.68 and 17,974.72

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Solution

The fourth proportional to 20,812.96, 28,743.68 and 17,974.72 is: 24,823.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812.96 : 28,743.68 = 17,974.72 : x
  2. Step 2: Convert to fraction form
    20,812.96/28,743.68 = 17,974.72/x
  3. Step 3: Cross multiply
    20,812.96x = 28,743.68 × 17,974.72
  4. Step 4: Simplify right side
    20,812.96x = 516,659,599.77
  5. Step 5: Solve for x
    x = 516,659,599.77/20,812.96
  6. Step 6: Final answer
    x = 24,823.94

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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.