Home / 31,435.20-43,381.08-18,007.65

Finding the Fourth Proportional to 31,435.20, 43,381.08 and 18,007.65

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Solution

The fourth proportional to 31,435.20, 43,381.08 and 18,007.65 is: 24,850.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,435.20 : 43,381.08 = 18,007.65 : x
  2. Step 2: Convert to fraction form
    31,435.20/43,381.08 = 18,007.65/x
  3. Step 3: Cross multiply
    31,435.20x = 43,381.08 × 18,007.65
  4. Step 4: Simplify right side
    31,435.20x = 781,191,305.26
  5. Step 5: Solve for x
    x = 781,191,305.26/31,435.20
  6. Step 6: Final answer
    x = 24,850.85

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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.