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Finding the Fourth Proportional to 28,247.76, 42,371.94 and 8,526.48

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Solution

The fourth proportional to 28,247.76, 42,371.94 and 8,526.48 is: 12,789.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.76 : 42,371.94 = 8,526.48 : x
  2. Step 2: Convert to fraction form
    28,247.76/42,371.94 = 8,526.48/x
  3. Step 3: Cross multiply
    28,247.76x = 42,371.94 × 8,526.48
  4. Step 4: Simplify right side
    28,247.76x = 361,283,498.97
  5. Step 5: Solve for x
    x = 361,283,498.97/28,247.76
  6. Step 6: Final answer
    x = 12,789.81

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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.