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Finding the Fourth Proportional to 28,101.76, 42,151.64 and 7,041.97

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Solution

The fourth proportional to 28,101.76, 42,151.64 and 7,041.97 is: 10,562.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.76 : 42,151.64 = 7,041.97 : x
  2. Step 2: Convert to fraction form
    28,101.76/42,151.64 = 7,041.97/x
  3. Step 3: Cross multiply
    28,101.76x = 42,151.64 × 7,041.97
  4. Step 4: Simplify right side
    28,101.76x = 296,830,584.33
  5. Step 5: Solve for x
    x = 296,830,584.33/28,101.76
  6. Step 6: Final answer
    x = 10,562.70

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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.