Home / 39,815.11-59,728.56-13,163.86

Finding the Fourth Proportional to 39,815.11, 59,728.56 and 13,163.86

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Solution

The fourth proportional to 39,815.11, 59,728.56 and 13,163.86 is: 19,747.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,815.11 : 59,728.56 = 13,163.86 : x
  2. Step 2: Convert to fraction form
    39,815.11/59,728.56 = 13,163.86/x
  3. Step 3: Cross multiply
    39,815.11x = 59,728.56 × 13,163.86
  4. Step 4: Simplify right side
    39,815.11x = 786,258,401.84
  5. Step 5: Solve for x
    x = 786,258,401.84/39,815.11
  6. Step 6: Final answer
    x = 19,747.74

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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.