Home / 31,439.10-43,382.58-18,009.12

Finding the Fourth Proportional to 31,439.10, 43,382.58 and 18,009.12

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Solution

The fourth proportional to 31,439.10, 43,382.58 and 18,009.12 is: 24,850.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,439.10 : 43,382.58 = 18,009.12 : x
  2. Step 2: Convert to fraction form
    31,439.10/43,382.58 = 18,009.12/x
  3. Step 3: Cross multiply
    31,439.10x = 43,382.58 × 18,009.12
  4. Step 4: Simplify right side
    31,439.10x = 781,282,089.13
  5. Step 5: Solve for x
    x = 781,282,089.13/31,439.10
  6. Step 6: Final answer
    x = 24,850.65

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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.