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Finding the Fourth Proportional to 27,401.80, 41,118.90 and 19,987.60

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Solution

The fourth proportional to 27,401.80, 41,118.90 and 19,987.60 is: 29,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,401.80 : 41,118.90 = 19,987.60 : x
  2. Step 2: Convert to fraction form
    27,401.80/41,118.90 = 19,987.60/x
  3. Step 3: Cross multiply
    27,401.80x = 41,118.90 × 19,987.60
  4. Step 4: Simplify right side
    27,401.80x = 821,868,125.64
  5. Step 5: Solve for x
    x = 821,868,125.64/27,401.80
  6. Step 6: Final answer
    x = 29,993.22

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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.