Home / 12,117.38-18,176.06-3,909.38

Finding the Fourth Proportional to 12,117.38, 18,176.06 and 3,909.38

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Solution

The fourth proportional to 12,117.38, 18,176.06 and 3,909.38 is: 5,864.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,117.38 : 18,176.06 = 3,909.38 : x
  2. Step 2: Convert to fraction form
    12,117.38/18,176.06 = 3,909.38/x
  3. Step 3: Cross multiply
    12,117.38x = 18,176.06 × 3,909.38
  4. Step 4: Simplify right side
    12,117.38x = 71,057,044.34
  5. Step 5: Solve for x
    x = 71,057,044.34/12,117.38
  6. Step 6: Final answer
    x = 5,864.06

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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.