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Finding the Fourth Proportional to 12,355.56, 18,523.62 and 6,111.18

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Solution

The fourth proportional to 12,355.56, 18,523.62 and 6,111.18 is: 9,161.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,355.56 : 18,523.62 = 6,111.18 : x
  2. Step 2: Convert to fraction form
    12,355.56/18,523.62 = 6,111.18/x
  3. Step 3: Cross multiply
    12,355.56x = 18,523.62 × 6,111.18
  4. Step 4: Simplify right side
    12,355.56x = 113,201,176.07
  5. Step 5: Solve for x
    x = 113,201,176.07/12,355.56
  6. Step 6: Final answer
    x = 9,161.96

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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.