Home / 13,932.48-20,878.20-10,217.40

Finding the Fourth Proportional to 13,932.48, 20,878.20 and 10,217.40

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Solution

The fourth proportional to 13,932.48, 20,878.20 and 10,217.40 is: 15,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,932.48 : 20,878.20 = 10,217.40 : x
  2. Step 2: Convert to fraction form
    13,932.48/20,878.20 = 10,217.40/x
  3. Step 3: Cross multiply
    13,932.48x = 20,878.20 × 10,217.40
  4. Step 4: Simplify right side
    13,932.48x = 213,320,920.68
  5. Step 5: Solve for x
    x = 213,320,920.68/13,932.48
  6. Step 6: Final answer
    x = 15,311.05

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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.