Home / 31,487.91-43,453.31-17,340.76

Finding the Fourth Proportional to 31,487.91, 43,453.31 and 17,340.76

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Solution

The fourth proportional to 31,487.91, 43,453.31 and 17,340.76 is: 23,930.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487.91 : 43,453.31 = 17,340.76 : x
  2. Step 2: Convert to fraction form
    31,487.91/43,453.31 = 17,340.76/x
  3. Step 3: Cross multiply
    31,487.91x = 43,453.31 × 17,340.76
  4. Step 4: Simplify right side
    31,487.91x = 753,513,419.92
  5. Step 5: Solve for x
    x = 753,513,419.92/31,487.91
  6. Step 6: Final answer
    x = 23,930.25

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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.