Home / 18,865.64-28,298.60-5,719.04

Finding the Fourth Proportional to 18,865.64, 28,298.60 and 5,719.04

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Solution

The fourth proportional to 18,865.64, 28,298.60 and 5,719.04 is: 8,578.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.64 : 28,298.60 = 5,719.04 : x
  2. Step 2: Convert to fraction form
    18,865.64/28,298.60 = 5,719.04/x
  3. Step 3: Cross multiply
    18,865.64x = 28,298.60 × 5,719.04
  4. Step 4: Simplify right side
    18,865.64x = 161,840,825.34
  5. Step 5: Solve for x
    x = 161,840,825.34/18,865.64
  6. Step 6: Final answer
    x = 8,578.60

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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.