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Finding the Fourth Proportional to 25,896.90, 38,845.35 and 8,130.30

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Solution

The fourth proportional to 25,896.90, 38,845.35 and 8,130.30 is: 12,195.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,896.90 : 38,845.35 = 8,130.30 : x
  2. Step 2: Convert to fraction form
    25,896.90/38,845.35 = 8,130.30/x
  3. Step 3: Cross multiply
    25,896.90x = 38,845.35 × 8,130.30
  4. Step 4: Simplify right side
    25,896.90x = 315,824,349.11
  5. Step 5: Solve for x
    x = 315,824,349.11/25,896.90
  6. Step 6: Final answer
    x = 12,195.45

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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.