Home / 28,268.20-42,402.30-7,491.70

Finding the Fourth Proportional to 28,268.20, 42,402.30 and 7,491.70

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Solution

The fourth proportional to 28,268.20, 42,402.30 and 7,491.70 is: 11,237.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.20 : 42,402.30 = 7,491.70 : x
  2. Step 2: Convert to fraction form
    28,268.20/42,402.30 = 7,491.70/x
  3. Step 3: Cross multiply
    28,268.20x = 42,402.30 × 7,491.70
  4. Step 4: Simplify right side
    28,268.20x = 317,665,310.91
  5. Step 5: Solve for x
    x = 317,665,310.91/28,268.20
  6. Step 6: Final answer
    x = 11,237.55

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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.