Home / 31,688.38-43,734.57-18,257.02

Finding the Fourth Proportional to 31,688.38, 43,734.57 and 18,257.02

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Solution

The fourth proportional to 31,688.38, 43,734.57 and 18,257.02 is: 25,197.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,688.38 : 43,734.57 = 18,257.02 : x
  2. Step 2: Convert to fraction form
    31,688.38/43,734.57 = 18,257.02/x
  3. Step 3: Cross multiply
    31,688.38x = 43,734.57 × 18,257.02
  4. Step 4: Simplify right side
    31,688.38x = 798,462,919.18
  5. Step 5: Solve for x
    x = 798,462,919.18/31,688.38
  6. Step 6: Final answer
    x = 25,197.34

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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.