Home / 13,417.20-20,117.80-8,226.80

Finding the Fourth Proportional to 13,417.20, 20,117.80 and 8,226.80

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Solution

The fourth proportional to 13,417.20, 20,117.80 and 8,226.80 is: 12,335.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.20 : 20,117.80 = 8,226.80 : x
  2. Step 2: Convert to fraction form
    13,417.20/20,117.80 = 8,226.80/x
  3. Step 3: Cross multiply
    13,417.20x = 20,117.80 × 8,226.80
  4. Step 4: Simplify right side
    13,417.20x = 165,505,117.04
  5. Step 5: Solve for x
    x = 165,505,117.04/13,417.20
  6. Step 6: Final answer
    x = 12,335.29

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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.