Home / 12,006.72-18,010.40-7,079.88

Finding the Fourth Proportional to 12,006.72, 18,010.40 and 7,079.88

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Solution

The fourth proportional to 12,006.72, 18,010.40 and 7,079.88 is: 10,620.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,006.72 : 18,010.40 = 7,079.88 : x
  2. Step 2: Convert to fraction form
    12,006.72/18,010.40 = 7,079.88/x
  3. Step 3: Cross multiply
    12,006.72x = 18,010.40 × 7,079.88
  4. Step 4: Simplify right side
    12,006.72x = 127,511,470.75
  5. Step 5: Solve for x
    x = 127,511,470.75/12,006.72
  6. Step 6: Final answer
    x = 10,620.01

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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.