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Finding the Fourth Proportional to 12,355.66, 18,534.31 and 4,349.46

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Solution

The fourth proportional to 12,355.66, 18,534.31 and 4,349.46 is: 6,524.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.66 : 18,534.31 = 4,349.46 : x
  2. Step 2: Convert to fraction form
    12,355.66/18,534.31 = 4,349.46/x
  3. Step 3: Cross multiply
    12,355.66x = 18,534.31 × 4,349.46
  4. Step 4: Simplify right side
    12,355.66x = 80,614,218.23
  5. Step 5: Solve for x
    x = 80,614,218.23/12,355.66
  6. Step 6: Final answer
    x = 6,524.48

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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.