Home / 12,006.42-18,000.88-5,679.06

Finding the Fourth Proportional to 12,006.42, 18,000.88 and 5,679.06

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Solution

The fourth proportional to 12,006.42, 18,000.88 and 5,679.06 is: 8,514.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,006.42 : 18,000.88 = 5,679.06 : x
  2. Step 2: Convert to fraction form
    12,006.42/18,000.88 = 5,679.06/x
  3. Step 3: Cross multiply
    12,006.42x = 18,000.88 × 5,679.06
  4. Step 4: Simplify right side
    12,006.42x = 102,228,077.57
  5. Step 5: Solve for x
    x = 102,228,077.57/12,006.42
  6. Step 6: Final answer
    x = 8,514.45

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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.