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Finding the Fourth Proportional to 12,204.87, 16,842.75 and 6,615.87

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Solution

The fourth proportional to 12,204.87, 16,842.75 and 6,615.87 is: 9,129.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,204.87 : 16,842.75 = 6,615.87 : x
  2. Step 2: Convert to fraction form
    12,204.87/16,842.75 = 6,615.87/x
  3. Step 3: Cross multiply
    12,204.87x = 16,842.75 × 6,615.87
  4. Step 4: Simplify right side
    12,204.87x = 111,429,444.44
  5. Step 5: Solve for x
    x = 111,429,444.44/12,204.87
  6. Step 6: Final answer
    x = 9,129.92

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Half scale
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Double scale
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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.