Home / 18,379.38-25,363.79-13,772.00

Finding the Fourth Proportional to 18,379.38, 25,363.79 and 13,772.00

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Solution

The fourth proportional to 18,379.38, 25,363.79 and 13,772.00 is: 19,005.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.38 : 25,363.79 = 13,772.00 : x
  2. Step 2: Convert to fraction form
    18,379.38/25,363.79 = 13,772.00/x
  3. Step 3: Cross multiply
    18,379.38x = 25,363.79 × 13,772.00
  4. Step 4: Simplify right side
    18,379.38x = 349,310,213.72
  5. Step 5: Solve for x
    x = 349,310,213.72/18,379.38
  6. Step 6: Final answer
    x = 19,005.55

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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.