Home / 31,381.26-43,310.67-18,807.18

Finding the Fourth Proportional to 31,381.26, 43,310.67 and 18,807.18

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Solution

The fourth proportional to 31,381.26, 43,310.67 and 18,807.18 is: 25,956.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,381.26 : 43,310.67 = 18,807.18 : x
  2. Step 2: Convert to fraction form
    31,381.26/43,310.67 = 18,807.18/x
  3. Step 3: Cross multiply
    31,381.26x = 43,310.67 × 18,807.18
  4. Step 4: Simplify right side
    31,381.26x = 814,551,566.61
  5. Step 5: Solve for x
    x = 814,551,566.61/31,381.26
  6. Step 6: Final answer
    x = 25,956.62

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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.