Home / 18,867.80-28,301.70-5,719.52

Finding the Fourth Proportional to 18,867.80, 28,301.70 and 5,719.52

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Solution

The fourth proportional to 18,867.80, 28,301.70 and 5,719.52 is: 8,579.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.80 : 28,301.70 = 5,719.52 : x
  2. Step 2: Convert to fraction form
    18,867.80/28,301.70 = 5,719.52/x
  3. Step 3: Cross multiply
    18,867.80x = 28,301.70 × 5,719.52
  4. Step 4: Simplify right side
    18,867.80x = 161,872,139.18
  5. Step 5: Solve for x
    x = 161,872,139.18/18,867.80
  6. Step 6: Final answer
    x = 8,579.28

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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.