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Finding the Fourth Proportional to 12,057.45, 18,168.32 and 9,914.19

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Solution

The fourth proportional to 12,057.45, 18,168.32 and 9,914.19 is: 14,938.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,057.45 : 18,168.32 = 9,914.19 : x
  2. Step 2: Convert to fraction form
    12,057.45/18,168.32 = 9,914.19/x
  3. Step 3: Cross multiply
    12,057.45x = 18,168.32 × 9,914.19
  4. Step 4: Simplify right side
    12,057.45x = 180,124,176.46
  5. Step 5: Solve for x
    x = 180,124,176.46/12,057.45
  6. Step 6: Final answer
    x = 14,938.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.