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Finding the Fourth Proportional to 10,383.78, 14,325.24 and 7,241.79

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Solution

The fourth proportional to 10,383.78, 14,325.24 and 7,241.79 is: 9,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,383.78 : 14,325.24 = 7,241.79 : x
  2. Step 2: Convert to fraction form
    10,383.78/14,325.24 = 7,241.79/x
  3. Step 3: Cross multiply
    10,383.78x = 14,325.24 × 7,241.79
  4. Step 4: Simplify right side
    10,383.78x = 103,740,379.78
  5. Step 5: Solve for x
    x = 103,740,379.78/10,383.78
  6. Step 6: Final answer
    x = 9,990.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.