Home / 20,082.95-30,125.99-5,291.70

Finding the Fourth Proportional to 20,082.95, 30,125.99 and 5,291.70

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Solution

The fourth proportional to 20,082.95, 30,125.99 and 5,291.70 is: 7,937.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.95 : 30,125.99 = 5,291.70 : x
  2. Step 2: Convert to fraction form
    20,082.95/30,125.99 = 5,291.70/x
  3. Step 3: Cross multiply
    20,082.95x = 30,125.99 × 5,291.70
  4. Step 4: Simplify right side
    20,082.95x = 159,417,701.28
  5. Step 5: Solve for x
    x = 159,417,701.28/20,082.95
  6. Step 6: Final answer
    x = 7,937.96

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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.