Home / 13,719.92-20,574.12-5,398.68

Finding the Fourth Proportional to 13,719.92, 20,574.12 and 5,398.68

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Solution

The fourth proportional to 13,719.92, 20,574.12 and 5,398.68 is: 8,095.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.92 : 20,574.12 = 5,398.68 : x
  2. Step 2: Convert to fraction form
    13,719.92/20,574.12 = 5,398.68/x
  3. Step 3: Cross multiply
    13,719.92x = 20,574.12 × 5,398.68
  4. Step 4: Simplify right side
    13,719.92x = 111,073,090.16
  5. Step 5: Solve for x
    x = 111,073,090.16/13,719.92
  6. Step 6: Final answer
    x = 8,095.75

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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.