Home / 18,787.38-25,927.39-10,403.88

Finding the Fourth Proportional to 18,787.38, 25,927.39 and 10,403.88

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Solution

The fourth proportional to 18,787.38, 25,927.39 and 10,403.88 is: 14,357.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.38 : 25,927.39 = 10,403.88 : x
  2. Step 2: Convert to fraction form
    18,787.38/25,927.39 = 10,403.88/x
  3. Step 3: Cross multiply
    18,787.38x = 25,927.39 × 10,403.88
  4. Step 4: Simplify right side
    18,787.38x = 269,745,454.27
  5. Step 5: Solve for x
    x = 269,745,454.27/18,787.38
  6. Step 6: Final answer
    x = 14,357.80

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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.