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Finding the Fourth Proportional to 12,320.18, 17,002 and 7,015

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Solution

The fourth proportional to 12,320.18, 17,002 and 7,015 is: 9,680.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.18 : 17,002 = 7,015 : x
  2. Step 2: Convert to fraction form
    12,320.18/17,002 = 7,015/x
  3. Step 3: Cross multiply
    12,320.18x = 17,002 × 7,015
  4. Step 4: Simplify right side
    12,320.18x = 119,269,030
  5. Step 5: Solve for x
    x = 119,269,030/12,320.18
  6. Step 6: Final answer
    x = 9,680.79

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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.