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Finding the Fourth Proportional to 12,170.28, 16,795.05 and 7,134.58

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Solution

The fourth proportional to 12,170.28, 16,795.05 and 7,134.58 is: 9,845.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.28 : 16,795.05 = 7,134.58 : x
  2. Step 2: Convert to fraction form
    12,170.28/16,795.05 = 7,134.58/x
  3. Step 3: Cross multiply
    12,170.28x = 16,795.05 × 7,134.58
  4. Step 4: Simplify right side
    12,170.28x = 119,825,622.07
  5. Step 5: Solve for x
    x = 119,825,622.07/12,170.28
  6. Step 6: Final answer
    x = 9,845.75

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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.