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Finding the Fourth Proportional to 25,900.35, 38,850.48 and 8,130.35

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Solution

The fourth proportional to 25,900.35, 38,850.48 and 8,130.35 is: 12,195.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,900.35 : 38,850.48 = 8,130.35 : x
  2. Step 2: Convert to fraction form
    25,900.35/38,850.48 = 8,130.35/x
  3. Step 3: Cross multiply
    25,900.35x = 38,850.48 × 8,130.35
  4. Step 4: Simplify right side
    25,900.35x = 315,867,805.82
  5. Step 5: Solve for x
    x = 315,867,805.82/25,900.35
  6. Step 6: Final answer
    x = 12,195.50

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Double scale
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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.