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Finding the Fourth Proportional to 28,182.76, 42,243.75 and 18,329.11

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Solution

The fourth proportional to 28,182.76, 42,243.75 and 18,329.11 is: 27,473.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.76 : 42,243.75 = 18,329.11 : x
  2. Step 2: Convert to fraction form
    28,182.76/42,243.75 = 18,329.11/x
  3. Step 3: Cross multiply
    28,182.76x = 42,243.75 × 18,329.11
  4. Step 4: Simplify right side
    28,182.76x = 774,290,340.56
  5. Step 5: Solve for x
    x = 774,290,340.56/28,182.76
  6. Step 6: Final answer
    x = 27,473.90

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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.