Home / 13,719.78-20,581.49-6,325.92

Finding the Fourth Proportional to 13,719.78, 20,581.49 and 6,325.92

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Solution

The fourth proportional to 13,719.78, 20,581.49 and 6,325.92 is: 9,489.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.78 : 20,581.49 = 6,325.92 : x
  2. Step 2: Convert to fraction form
    13,719.78/20,581.49 = 6,325.92/x
  3. Step 3: Cross multiply
    13,719.78x = 20,581.49 × 6,325.92
  4. Step 4: Simplify right side
    13,719.78x = 130,196,859.22
  5. Step 5: Solve for x
    x = 130,196,859.22/13,719.78
  6. Step 6: Final answer
    x = 9,489.72

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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.