Home / 28,864.20-43,361.10-28,086.60

Finding the Fourth Proportional to 28,864.20, 43,361.10 and 28,086.60

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Solution

The fourth proportional to 28,864.20, 43,361.10 and 28,086.60 is: 42,192.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,864.20 : 43,361.10 = 28,086.60 : x
  2. Step 2: Convert to fraction form
    28,864.20/43,361.10 = 28,086.60/x
  3. Step 3: Cross multiply
    28,864.20x = 43,361.10 × 28,086.60
  4. Step 4: Simplify right side
    28,864.20x = 1,217,865,871.26
  5. Step 5: Solve for x
    x = 1,217,865,871.26/28,864.20
  6. Step 6: Final answer
    x = 42,192.95

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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.