Home / 18,001.16-26,987.97-12,438.62

Finding the Fourth Proportional to 18,001.16, 26,987.97 and 12,438.62

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Solution

The fourth proportional to 18,001.16, 26,987.97 and 12,438.62 is: 18,648.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,001.16 : 26,987.97 = 12,438.62 : x
  2. Step 2: Convert to fraction form
    18,001.16/26,987.97 = 12,438.62/x
  3. Step 3: Cross multiply
    18,001.16x = 26,987.97 × 12,438.62
  4. Step 4: Simplify right side
    18,001.16x = 335,693,103.40
  5. Step 5: Solve for x
    x = 335,693,103.40/18,001.16
  6. Step 6: Final answer
    x = 18,648.42

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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.