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Finding the Fourth Proportional to 13,028.50, 17,979.22 and 7,060.15

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Solution

The fourth proportional to 13,028.50, 17,979.22 and 7,060.15 is: 9,742.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,028.50 : 17,979.22 = 7,060.15 : x
  2. Step 2: Convert to fraction form
    13,028.50/17,979.22 = 7,060.15/x
  3. Step 3: Cross multiply
    13,028.50x = 17,979.22 × 7,060.15
  4. Step 4: Simplify right side
    13,028.50x = 126,935,990.08
  5. Step 5: Solve for x
    x = 126,935,990.08/13,028.50
  6. Step 6: Final answer
    x = 9,742.95

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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.