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Finding the Fourth Proportional to 25,989.38, 38,988.88 and 8,224.50

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Solution

The fourth proportional to 25,989.38, 38,988.88 and 8,224.50 is: 12,338.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,989.38 : 38,988.88 = 8,224.50 : x
  2. Step 2: Convert to fraction form
    25,989.38/38,988.88 = 8,224.50/x
  3. Step 3: Cross multiply
    25,989.38x = 38,988.88 × 8,224.50
  4. Step 4: Simplify right side
    25,989.38x = 320,664,002.44
  5. Step 5: Solve for x
    x = 320,664,002.44/25,989.38
  6. Step 6: Final answer
    x = 12,338.27

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Double scale
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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.