Home / 26,910.80-40,387.08-18,648.72

Finding the Fourth Proportional to 26,910.80, 40,387.08 and 18,648.72

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Solution

The fourth proportional to 26,910.80, 40,387.08 and 18,648.72 is: 27,987.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,910.80 : 40,387.08 = 18,648.72 : x
  2. Step 2: Convert to fraction form
    26,910.80/40,387.08 = 18,648.72/x
  3. Step 3: Cross multiply
    26,910.80x = 40,387.08 × 18,648.72
  4. Step 4: Simplify right side
    26,910.80x = 753,167,346.54
  5. Step 5: Solve for x
    x = 753,167,346.54/26,910.80
  6. Step 6: Final answer
    x = 27,987.55

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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.