Home / 13,919.17-20,874.12-6,419.66

Finding the Fourth Proportional to 13,919.17, 20,874.12 and 6,419.66

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Solution

The fourth proportional to 13,919.17, 20,874.12 and 6,419.66 is: 9,627.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.17 : 20,874.12 = 6,419.66 : x
  2. Step 2: Convert to fraction form
    13,919.17/20,874.12 = 6,419.66/x
  3. Step 3: Cross multiply
    13,919.17x = 20,874.12 × 6,419.66
  4. Step 4: Simplify right side
    13,919.17x = 134,004,753.20
  5. Step 5: Solve for x
    x = 134,004,753.20/13,919.17
  6. Step 6: Final answer
    x = 9,627.35

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1.5x scale

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.