Home / 20,082.15-30,130.47-12,200.76

Finding the Fourth Proportional to 20,082.15, 30,130.47 and 12,200.76

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Solution

The fourth proportional to 20,082.15, 30,130.47 and 12,200.76 is: 18,305.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,082.15 : 30,130.47 = 12,200.76 : x
  2. Step 2: Convert to fraction form
    20,082.15/30,130.47 = 12,200.76/x
  3. Step 3: Cross multiply
    20,082.15x = 30,130.47 × 12,200.76
  4. Step 4: Simplify right side
    20,082.15x = 367,614,633.16
  5. Step 5: Solve for x
    x = 367,614,633.16/20,082.15
  6. Step 6: Final answer
    x = 18,305.54

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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.