Home / 20,479.38-30,719.26-5,689.46

Finding the Fourth Proportional to 20,479.38, 30,719.26 and 5,689.46

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Solution

The fourth proportional to 20,479.38, 30,719.26 and 5,689.46 is: 8,534.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.38 : 30,719.26 = 5,689.46 : x
  2. Step 2: Convert to fraction form
    20,479.38/30,719.26 = 5,689.46/x
  3. Step 3: Cross multiply
    20,479.38x = 30,719.26 × 5,689.46
  4. Step 4: Simplify right side
    20,479.38x = 174,776,001.00
  5. Step 5: Solve for x
    x = 174,776,001.00/20,479.38
  6. Step 6: Final answer
    x = 8,534.24

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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.