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Finding the Fourth Proportional to 25,855.74, 38,783.61 and 7,387.74

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Solution

The fourth proportional to 25,855.74, 38,783.61 and 7,387.74 is: 11,081.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,855.74 : 38,783.61 = 7,387.74 : x
  2. Step 2: Convert to fraction form
    25,855.74/38,783.61 = 7,387.74/x
  3. Step 3: Cross multiply
    25,855.74x = 38,783.61 × 7,387.74
  4. Step 4: Simplify right side
    25,855.74x = 286,523,226.94
  5. Step 5: Solve for x
    x = 286,523,226.94/25,855.74
  6. Step 6: Final answer
    x = 11,081.61

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Similar ratio
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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.