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Finding the Fourth Proportional to 28,227.40, 42,341.12 and 7,169.02

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Solution

The fourth proportional to 28,227.40, 42,341.12 and 7,169.02 is: 10,753.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,227.40 : 42,341.12 = 7,169.02 : x
  2. Step 2: Convert to fraction form
    28,227.40/42,341.12 = 7,169.02/x
  3. Step 3: Cross multiply
    28,227.40x = 42,341.12 × 7,169.02
  4. Step 4: Simplify right side
    28,227.40x = 303,544,479.62
  5. Step 5: Solve for x
    x = 303,544,479.62/28,227.40
  6. Step 6: Final answer
    x = 10,753.54

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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.