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Finding the Fourth Proportional to 19,757.79, 29,648.36 and 7,286.54

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Solution

The fourth proportional to 19,757.79, 29,648.36 and 7,286.54 is: 10,934.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,757.79 : 29,648.36 = 7,286.54 : x
  2. Step 2: Convert to fraction form
    19,757.79/29,648.36 = 7,286.54/x
  3. Step 3: Cross multiply
    19,757.79x = 29,648.36 × 7,286.54
  4. Step 4: Simplify right side
    19,757.79x = 216,033,831.05
  5. Step 5: Solve for x
    x = 216,033,831.05/19,757.79
  6. Step 6: Final answer
    x = 10,934.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.