Home / 20,082.72-30,100.19-15,136.05

Finding the Fourth Proportional to 20,082.72, 30,100.19 and 15,136.05

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Solution

The fourth proportional to 20,082.72, 30,100.19 and 15,136.05 is: 22,686.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.72 : 30,100.19 = 15,136.05 : x
  2. Step 2: Convert to fraction form
    20,082.72/30,100.19 = 15,136.05/x
  3. Step 3: Cross multiply
    20,082.72x = 30,100.19 × 15,136.05
  4. Step 4: Simplify right side
    20,082.72x = 455,597,905.17
  5. Step 5: Solve for x
    x = 455,597,905.17/20,082.72
  6. Step 6: Final answer
    x = 22,686.07

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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.