Home / 31,343.78-43,217.39-25,657.58

Finding the Fourth Proportional to 31,343.78, 43,217.39 and 25,657.58

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Solution

The fourth proportional to 31,343.78, 43,217.39 and 25,657.58 is: 35,377.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,343.78 : 43,217.39 = 25,657.58 : x
  2. Step 2: Convert to fraction form
    31,343.78/43,217.39 = 25,657.58/x
  3. Step 3: Cross multiply
    31,343.78x = 43,217.39 × 25,657.58
  4. Step 4: Simplify right side
    31,343.78x = 1,108,853,621.07
  5. Step 5: Solve for x
    x = 1,108,853,621.07/31,343.78
  6. Step 6: Final answer
    x = 35,377.15

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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.