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Finding the Fourth Proportional to 12,252.63, 16,905.78 and 7,471.20

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Solution

The fourth proportional to 12,252.63, 16,905.78 and 7,471.20 is: 10,308.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,252.63 : 16,905.78 = 7,471.20 : x
  2. Step 2: Convert to fraction form
    12,252.63/16,905.78 = 7,471.20/x
  3. Step 3: Cross multiply
    12,252.63x = 16,905.78 × 7,471.20
  4. Step 4: Simplify right side
    12,252.63x = 126,306,463.54
  5. Step 5: Solve for x
    x = 126,306,463.54/12,252.63
  6. Step 6: Final answer
    x = 10,308.52

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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.