Home / 18,858.64-28,288.11-5,712.04

Finding the Fourth Proportional to 18,858.64, 28,288.11 and 5,712.04

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Solution

The fourth proportional to 18,858.64, 28,288.11 and 5,712.04 is: 8,568.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858.64 : 28,288.11 = 5,712.04 : x
  2. Step 2: Convert to fraction form
    18,858.64/28,288.11 = 5,712.04/x
  3. Step 3: Cross multiply
    18,858.64x = 28,288.11 × 5,712.04
  4. Step 4: Simplify right side
    18,858.64x = 161,582,815.84
  5. Step 5: Solve for x
    x = 161,582,815.84/18,858.64
  6. Step 6: Final answer
    x = 8,568.11

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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.