Home / 31,368.92-43,288.96-17,221.64

Finding the Fourth Proportional to 31,368.92, 43,288.96 and 17,221.64

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Solution

The fourth proportional to 31,368.92, 43,288.96 and 17,221.64 is: 23,765.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,368.92 : 43,288.96 = 17,221.64 : x
  2. Step 2: Convert to fraction form
    31,368.92/43,288.96 = 17,221.64/x
  3. Step 3: Cross multiply
    31,368.92x = 43,288.96 × 17,221.64
  4. Step 4: Simplify right side
    31,368.92x = 745,506,885.09
  5. Step 5: Solve for x
    x = 745,506,885.09/31,368.92
  6. Step 6: Final answer
    x = 23,765.78

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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.