Home / 15,082.28-20,813.04-9,112.90

Finding the Fourth Proportional to 15,082.28, 20,813.04 and 9,112.90

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Solution

The fourth proportional to 15,082.28, 20,813.04 and 9,112.90 is: 12,575.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,082.28 : 20,813.04 = 9,112.90 : x
  2. Step 2: Convert to fraction form
    15,082.28/20,813.04 = 9,112.90/x
  3. Step 3: Cross multiply
    15,082.28x = 20,813.04 × 9,112.90
  4. Step 4: Simplify right side
    15,082.28x = 189,667,152.22
  5. Step 5: Solve for x
    x = 189,667,152.22/15,082.28
  6. Step 6: Final answer
    x = 12,575.50

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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.