Home / 31,318.92-43,219.86-17,171.76

Finding the Fourth Proportional to 31,318.92, 43,219.86 and 17,171.76

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Solution

The fourth proportional to 31,318.92, 43,219.86 and 17,171.76 is: 23,696.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,318.92 : 43,219.86 = 17,171.76 : x
  2. Step 2: Convert to fraction form
    31,318.92/43,219.86 = 17,171.76/x
  3. Step 3: Cross multiply
    31,318.92x = 43,219.86 × 17,171.76
  4. Step 4: Simplify right side
    31,318.92x = 742,161,063.15
  5. Step 5: Solve for x
    x = 742,161,063.15/31,318.92
  6. Step 6: Final answer
    x = 23,696.89

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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.