Home / 28,772.28-43,163.48-11,905.24

Finding the Fourth Proportional to 28,772.28, 43,163.48 and 11,905.24

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Solution

The fourth proportional to 28,772.28, 43,163.48 and 11,905.24 is: 17,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,772.28 : 43,163.48 = 11,905.24 : x
  2. Step 2: Convert to fraction form
    28,772.28/43,163.48 = 11,905.24/x
  3. Step 3: Cross multiply
    28,772.28x = 43,163.48 × 11,905.24
  4. Step 4: Simplify right side
    28,772.28x = 513,871,588.64
  5. Step 5: Solve for x
    x = 513,871,588.64/28,772.28
  6. Step 6: Final answer
    x = 17,859.95

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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.