Home / 18,904.65-26,086.82-11,142.21

Finding the Fourth Proportional to 18,904.65, 26,086.82 and 11,142.21

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Solution

The fourth proportional to 18,904.65, 26,086.82 and 11,142.21 is: 15,375.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,904.65 : 26,086.82 = 11,142.21 : x
  2. Step 2: Convert to fraction form
    18,904.65/26,086.82 = 11,142.21/x
  3. Step 3: Cross multiply
    18,904.65x = 26,086.82 × 11,142.21
  4. Step 4: Simplify right side
    18,904.65x = 290,664,826.67
  5. Step 5: Solve for x
    x = 290,664,826.67/18,904.65
  6. Step 6: Final answer
    x = 15,375.31

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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.