Home / 12,013.20-17,998.20-11,290.32

Finding the Fourth Proportional to 12,013.20, 17,998.20 and 11,290.32

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Solution

The fourth proportional to 12,013.20, 17,998.20 and 11,290.32 is: 16,915.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.20 : 17,998.20 = 11,290.32 : x
  2. Step 2: Convert to fraction form
    12,013.20/17,998.20 = 11,290.32/x
  3. Step 3: Cross multiply
    12,013.20x = 17,998.20 × 11,290.32
  4. Step 4: Simplify right side
    12,013.20x = 203,205,437.42
  5. Step 5: Solve for x
    x = 203,205,437.42/12,013.20
  6. Step 6: Final answer
    x = 16,915.18

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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.