Home / 13,813.68-20,717.28-3,951.12

Finding the Fourth Proportional to 13,813.68, 20,717.28 and 3,951.12

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Solution

The fourth proportional to 13,813.68, 20,717.28 and 3,951.12 is: 5,925.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.68 : 20,717.28 = 3,951.12 : x
  2. Step 2: Convert to fraction form
    13,813.68/20,717.28 = 3,951.12/x
  3. Step 3: Cross multiply
    13,813.68x = 20,717.28 × 3,951.12
  4. Step 4: Simplify right side
    13,813.68x = 81,856,459.35
  5. Step 5: Solve for x
    x = 81,856,459.35/13,813.68
  6. Step 6: Final answer
    x = 5,925.75

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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.