Home / 26,781.64-40,120.62-20,612.68

Finding the Fourth Proportional to 26,781.64, 40,120.62 and 20,612.68

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Solution

The fourth proportional to 26,781.64, 40,120.62 and 20,612.68 is: 30,879.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,781.64 : 40,120.62 = 20,612.68 : x
  2. Step 2: Convert to fraction form
    26,781.64/40,120.62 = 20,612.68/x
  3. Step 3: Cross multiply
    26,781.64x = 40,120.62 × 20,612.68
  4. Step 4: Simplify right side
    26,781.64x = 826,993,501.46
  5. Step 5: Solve for x
    x = 826,993,501.46/26,781.64
  6. Step 6: Final answer
    x = 30,879.12

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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.