Home / 18,787.07-25,867.15-15,948.56

Finding the Fourth Proportional to 18,787.07, 25,867.15 and 15,948.56

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Solution

The fourth proportional to 18,787.07, 25,867.15 and 15,948.56 is: 21,958.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.07 : 25,867.15 = 15,948.56 : x
  2. Step 2: Convert to fraction form
    18,787.07/25,867.15 = 15,948.56/x
  3. Step 3: Cross multiply
    18,787.07x = 25,867.15 × 15,948.56
  4. Step 4: Simplify right side
    18,787.07x = 412,543,818.60
  5. Step 5: Solve for x
    x = 412,543,818.60/18,787.07
  6. Step 6: Final answer
    x = 21,958.92

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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.