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Finding the Fourth Proportional to 18,598.67, 25,665.69 and 10,640.42

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Solution

The fourth proportional to 18,598.67, 25,665.69 and 10,640.42 is: 14,683.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,598.67 : 25,665.69 = 10,640.42 : x
  2. Step 2: Convert to fraction form
    18,598.67/25,665.69 = 10,640.42/x
  3. Step 3: Cross multiply
    18,598.67x = 25,665.69 × 10,640.42
  4. Step 4: Simplify right side
    18,598.67x = 273,093,721.19
  5. Step 5: Solve for x
    x = 273,093,721.19/18,598.67
  6. Step 6: Final answer
    x = 14,683.51

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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.