Home / 11,414.80-17,122.20-8,280.10

Finding the Fourth Proportional to 11,414.80, 17,122.20 and 8,280.10

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Solution

The fourth proportional to 11,414.80, 17,122.20 and 8,280.10 is: 12,420.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,414.80 : 17,122.20 = 8,280.10 : x
  2. Step 2: Convert to fraction form
    11,414.80/17,122.20 = 8,280.10/x
  3. Step 3: Cross multiply
    11,414.80x = 17,122.20 × 8,280.10
  4. Step 4: Simplify right side
    11,414.80x = 141,773,528.22
  5. Step 5: Solve for x
    x = 141,773,528.22/11,414.80
  6. Step 6: Final answer
    x = 12,420.15

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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.