Home / 31,372.96-43,290-17,226.40

Finding the Fourth Proportional to 31,372.96, 43,290 and 17,226.40

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Solution

The fourth proportional to 31,372.96, 43,290 and 17,226.40 is: 23,769.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,372.96 : 43,290 = 17,226.40 : x
  2. Step 2: Convert to fraction form
    31,372.96/43,290 = 17,226.40/x
  3. Step 3: Cross multiply
    31,372.96x = 43,290 × 17,226.40
  4. Step 4: Simplify right side
    31,372.96x = 745,730,856.00
  5. Step 5: Solve for x
    x = 745,730,856.00/31,372.96
  6. Step 6: Final answer
    x = 23,769.86

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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.