Home / 31,787.98-43,869.46-18,359.80

Finding the Fourth Proportional to 31,787.98, 43,869.46 and 18,359.80

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Solution

The fourth proportional to 31,787.98, 43,869.46 and 18,359.80 is: 25,337.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,787.98 : 43,869.46 = 18,359.80 : x
  2. Step 2: Convert to fraction form
    31,787.98/43,869.46 = 18,359.80/x
  3. Step 3: Cross multiply
    31,787.98x = 43,869.46 × 18,359.80
  4. Step 4: Simplify right side
    31,787.98x = 805,434,511.71
  5. Step 5: Solve for x
    x = 805,434,511.71/31,787.98
  6. Step 6: Final answer
    x = 25,337.71

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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.