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Finding the Fourth Proportional to 13,082.95, 18,054.09 and 7,418.22

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Solution

The fourth proportional to 13,082.95, 18,054.09 and 7,418.22 is: 10,236.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,082.95 : 18,054.09 = 7,418.22 : x
  2. Step 2: Convert to fraction form
    13,082.95/18,054.09 = 7,418.22/x
  3. Step 3: Cross multiply
    13,082.95x = 18,054.09 × 7,418.22
  4. Step 4: Simplify right side
    13,082.95x = 133,929,211.52
  5. Step 5: Solve for x
    x = 133,929,211.52/13,082.95
  6. Step 6: Final answer
    x = 10,236.93

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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.