Home / 25,789.19-38,709.86-13,318.12

Finding the Fourth Proportional to 25,789.19, 38,709.86 and 13,318.12

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Solution

The fourth proportional to 25,789.19, 38,709.86 and 13,318.12 is: 19,990.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,789.19 : 38,709.86 = 13,318.12 : x
  2. Step 2: Convert to fraction form
    25,789.19/38,709.86 = 13,318.12/x
  3. Step 3: Cross multiply
    25,789.19x = 38,709.86 × 13,318.12
  4. Step 4: Simplify right side
    25,789.19x = 515,542,560.66
  5. Step 5: Solve for x
    x = 515,542,560.66/25,789.19
  6. Step 6: Final answer
    x = 19,990.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.