Home / 31,358.71-43,260.89-18,612.43

Finding the Fourth Proportional to 31,358.71, 43,260.89 and 18,612.43

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Solution

The fourth proportional to 31,358.71, 43,260.89 and 18,612.43 is: 25,676.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,358.71 : 43,260.89 = 18,612.43 : x
  2. Step 2: Convert to fraction form
    31,358.71/43,260.89 = 18,612.43/x
  3. Step 3: Cross multiply
    31,358.71x = 43,260.89 × 18,612.43
  4. Step 4: Simplify right side
    31,358.71x = 805,190,286.86
  5. Step 5: Solve for x
    x = 805,190,286.86/31,358.71
  6. Step 6: Final answer
    x = 25,676.77

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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.