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Finding the Fourth Proportional to 28,009.75, 42,014.64 and 7,233.25

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Solution

The fourth proportional to 28,009.75, 42,014.64 and 7,233.25 is: 10,849.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.75 : 42,014.64 = 7,233.25 : x
  2. Step 2: Convert to fraction form
    28,009.75/42,014.64 = 7,233.25/x
  3. Step 3: Cross multiply
    28,009.75x = 42,014.64 × 7,233.25
  4. Step 4: Simplify right side
    28,009.75x = 303,902,394.78
  5. Step 5: Solve for x
    x = 303,902,394.78/28,009.75
  6. Step 6: Final answer
    x = 10,849.88

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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.