Home / 26,981.12-40,481.40-13,839.68

Finding the Fourth Proportional to 26,981.12, 40,481.40 and 13,839.68

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Solution

The fourth proportional to 26,981.12, 40,481.40 and 13,839.68 is: 20,764.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,981.12 : 40,481.40 = 13,839.68 : x
  2. Step 2: Convert to fraction form
    26,981.12/40,481.40 = 13,839.68/x
  3. Step 3: Cross multiply
    26,981.12x = 40,481.40 × 13,839.68
  4. Step 4: Simplify right side
    26,981.12x = 560,249,621.95
  5. Step 5: Solve for x
    x = 560,249,621.95/26,981.12
  6. Step 6: Final answer
    x = 20,764.51

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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.