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Finding the Fourth Proportional to 38,015.11, 57,019.02 and 11,712.79

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Solution

The fourth proportional to 38,015.11, 57,019.02 and 11,712.79 is: 17,568.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,015.11 : 57,019.02 = 11,712.79 : x
  2. Step 2: Convert to fraction form
    38,015.11/57,019.02 = 11,712.79/x
  3. Step 3: Cross multiply
    38,015.11x = 57,019.02 × 11,712.79
  4. Step 4: Simplify right side
    38,015.11x = 667,851,900.50
  5. Step 5: Solve for x
    x = 667,851,900.50/38,015.11
  6. Step 6: Final answer
    x = 17,568.06

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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.