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Finding the Fourth Proportional to 12,101.96, 16,700.63 and 7,065.78

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Solution

The fourth proportional to 12,101.96, 16,700.63 and 7,065.78 is: 9,750.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101.96 : 16,700.63 = 7,065.78 : x
  2. Step 2: Convert to fraction form
    12,101.96/16,700.63 = 7,065.78/x
  3. Step 3: Cross multiply
    12,101.96x = 16,700.63 × 7,065.78
  4. Step 4: Simplify right side
    12,101.96x = 118,002,942.11
  5. Step 5: Solve for x
    x = 118,002,942.11/12,101.96
  6. Step 6: Final answer
    x = 9,750.73

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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.