Home / 31,787.60-43,868.98-18,359.42

Finding the Fourth Proportional to 31,787.60, 43,868.98 and 18,359.42

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Solution

The fourth proportional to 31,787.60, 43,868.98 and 18,359.42 is: 25,337.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,787.60 : 43,868.98 = 18,359.42 : x
  2. Step 2: Convert to fraction form
    31,787.60/43,868.98 = 18,359.42/x
  3. Step 3: Cross multiply
    31,787.60x = 43,868.98 × 18,359.42
  4. Step 4: Simplify right side
    31,787.60x = 805,409,028.79
  5. Step 5: Solve for x
    x = 805,409,028.79/31,787.60
  6. Step 6: Final answer
    x = 25,337.21

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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.