Home / 28,272.88-42,328.68-22,438

Finding the Fourth Proportional to 28,272.88, 42,328.68 and 22,438

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Solution

The fourth proportional to 28,272.88, 42,328.68 and 22,438 is: 33,593.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,272.88 : 42,328.68 = 22,438 : x
  2. Step 2: Convert to fraction form
    28,272.88/42,328.68 = 22,438/x
  3. Step 3: Cross multiply
    28,272.88x = 42,328.68 × 22,438
  4. Step 4: Simplify right side
    28,272.88x = 949,770,921.84
  5. Step 5: Solve for x
    x = 949,770,921.84/28,272.88
  6. Step 6: Final answer
    x = 33,593.00

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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.