Home / 26,781.66-40,120.20-12,721.68

Finding the Fourth Proportional to 26,781.66, 40,120.20 and 12,721.68

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Solution

The fourth proportional to 26,781.66, 40,120.20 and 12,721.68 is: 19,057.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,781.66 : 40,120.20 = 12,721.68 : x
  2. Step 2: Convert to fraction form
    26,781.66/40,120.20 = 12,721.68/x
  3. Step 3: Cross multiply
    26,781.66x = 40,120.20 × 12,721.68
  4. Step 4: Simplify right side
    26,781.66x = 510,396,345.94
  5. Step 5: Solve for x
    x = 510,396,345.94/26,781.66
  6. Step 6: Final answer
    x = 19,057.68

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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.