Home / 31,731.70-43,789.17-18,303.52

Finding the Fourth Proportional to 31,731.70, 43,789.17 and 18,303.52

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Solution

The fourth proportional to 31,731.70, 43,789.17 and 18,303.52 is: 25,258.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,731.70 : 43,789.17 = 18,303.52 : x
  2. Step 2: Convert to fraction form
    31,731.70/43,789.17 = 18,303.52/x
  3. Step 3: Cross multiply
    31,731.70x = 43,789.17 × 18,303.52
  4. Step 4: Simplify right side
    31,731.70x = 801,495,948.88
  5. Step 5: Solve for x
    x = 801,495,948.88/31,731.70
  6. Step 6: Final answer
    x = 25,258.53

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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.