Home / 40,108.29-55,350.10-21,958.71

Finding the Fourth Proportional to 40,108.29, 55,350.10 and 21,958.71

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Solution

The fourth proportional to 40,108.29, 55,350.10 and 21,958.71 is: 30,303.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,108.29 : 55,350.10 = 21,958.71 : x
  2. Step 2: Convert to fraction form
    40,108.29/55,350.10 = 21,958.71/x
  3. Step 3: Cross multiply
    40,108.29x = 55,350.10 × 21,958.71
  4. Step 4: Simplify right side
    40,108.29x = 1,215,416,684.58
  5. Step 5: Solve for x
    x = 1,215,416,684.58/40,108.29
  6. Step 6: Final answer
    x = 30,303.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.