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Finding the Fourth Proportional to 18,640.93, 25,716.01 and 11,082.98

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Solution

The fourth proportional to 18,640.93, 25,716.01 and 11,082.98 is: 15,289.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.93 : 25,716.01 = 11,082.98 : x
  2. Step 2: Convert to fraction form
    18,640.93/25,716.01 = 11,082.98/x
  3. Step 3: Cross multiply
    18,640.93x = 25,716.01 × 11,082.98
  4. Step 4: Simplify right side
    18,640.93x = 285,010,024.51
  5. Step 5: Solve for x
    x = 285,010,024.51/18,640.93
  6. Step 6: Final answer
    x = 15,289.47

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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.