Home / 28,382.76-42,530.34-17,972.64

Finding the Fourth Proportional to 28,382.76, 42,530.34 and 17,972.64

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Solution

The fourth proportional to 28,382.76, 42,530.34 and 17,972.64 is: 26,931.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,382.76 : 42,530.34 = 17,972.64 : x
  2. Step 2: Convert to fraction form
    28,382.76/42,530.34 = 17,972.64/x
  3. Step 3: Cross multiply
    28,382.76x = 42,530.34 × 17,972.64
  4. Step 4: Simplify right side
    28,382.76x = 764,382,489.90
  5. Step 5: Solve for x
    x = 764,382,489.90/28,382.76
  6. Step 6: Final answer
    x = 26,931.22

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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.