Home / 20,651.28-30,969.60-7,500.24

Finding the Fourth Proportional to 20,651.28, 30,969.60 and 7,500.24

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Solution

The fourth proportional to 20,651.28, 30,969.60 and 7,500.24 is: 11,247.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,651.28 : 30,969.60 = 7,500.24 : x
  2. Step 2: Convert to fraction form
    20,651.28/30,969.60 = 7,500.24/x
  3. Step 3: Cross multiply
    20,651.28x = 30,969.60 × 7,500.24
  4. Step 4: Simplify right side
    20,651.28x = 232,279,432.70
  5. Step 5: Solve for x
    x = 232,279,432.70/20,651.28
  6. Step 6: Final answer
    x = 11,247.70

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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.