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Finding the Fourth Proportional to 25,443.84, 38,169.84 and 7,917.72

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Solution

The fourth proportional to 25,443.84, 38,169.84 and 7,917.72 is: 11,877.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,443.84 : 38,169.84 = 7,917.72 : x
  2. Step 2: Convert to fraction form
    25,443.84/38,169.84 = 7,917.72/x
  3. Step 3: Cross multiply
    25,443.84x = 38,169.84 × 7,917.72
  4. Step 4: Simplify right side
    25,443.84x = 302,218,105.56
  5. Step 5: Solve for x
    x = 302,218,105.56/25,443.84
  6. Step 6: Final answer
    x = 11,877.85

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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.