Home / 31,384.43-43,310.31-18,809.18

Finding the Fourth Proportional to 31,384.43, 43,310.31 and 18,809.18

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Solution

The fourth proportional to 31,384.43, 43,310.31 and 18,809.18 is: 25,956.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,384.43 : 43,310.31 = 18,809.18 : x
  2. Step 2: Convert to fraction form
    31,384.43/43,310.31 = 18,809.18/x
  3. Step 3: Cross multiply
    31,384.43x = 43,310.31 × 18,809.18
  4. Step 4: Simplify right side
    31,384.43x = 814,631,378.90
  5. Step 5: Solve for x
    x = 814,631,378.90/31,384.43
  6. Step 6: Final answer
    x = 25,956.55

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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.