Home / 12,148.03-18,178.66-8,820.15

Finding the Fourth Proportional to 12,148.03, 18,178.66 and 8,820.15

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Solution

The fourth proportional to 12,148.03, 18,178.66 and 8,820.15 is: 13,198.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.03 : 18,178.66 = 8,820.15 : x
  2. Step 2: Convert to fraction form
    12,148.03/18,178.66 = 8,820.15/x
  3. Step 3: Cross multiply
    12,148.03x = 18,178.66 × 8,820.15
  4. Step 4: Simplify right side
    12,148.03x = 160,338,508.00
  5. Step 5: Solve for x
    x = 160,338,508.00/12,148.03
  6. Step 6: Final answer
    x = 13,198.73

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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.