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Finding the Fourth Proportional to 23,103.80, 34,593.12 and 11,987.20

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Solution

The fourth proportional to 23,103.80, 34,593.12 and 11,987.20 is: 17,948.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,103.80 : 34,593.12 = 11,987.20 : x
  2. Step 2: Convert to fraction form
    23,103.80/34,593.12 = 11,987.20/x
  3. Step 3: Cross multiply
    23,103.80x = 34,593.12 × 11,987.20
  4. Step 4: Simplify right side
    23,103.80x = 414,674,648.06
  5. Step 5: Solve for x
    x = 414,674,648.06/23,103.80
  6. Step 6: Final answer
    x = 17,948.33

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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.