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Finding the Fourth Proportional to 12,861.04, 17,748.57 and 7,195.60

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Solution

The fourth proportional to 12,861.04, 17,748.57 and 7,195.60 is: 9,930.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.04 : 17,748.57 = 7,195.60 : x
  2. Step 2: Convert to fraction form
    12,861.04/17,748.57 = 7,195.60/x
  3. Step 3: Cross multiply
    12,861.04x = 17,748.57 × 7,195.60
  4. Step 4: Simplify right side
    12,861.04x = 127,711,610.29
  5. Step 5: Solve for x
    x = 127,711,610.29/12,861.04
  6. Step 6: Final answer
    x = 9,930.12

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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.