Home / 28,299.78-42,462.43-11,671.29

Finding the Fourth Proportional to 28,299.78, 42,462.43 and 11,671.29

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Solution

The fourth proportional to 28,299.78, 42,462.43 and 11,671.29 is: 17,512.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.78 : 42,462.43 = 11,671.29 : x
  2. Step 2: Convert to fraction form
    28,299.78/42,462.43 = 11,671.29/x
  3. Step 3: Cross multiply
    28,299.78x = 42,462.43 × 11,671.29
  4. Step 4: Simplify right side
    28,299.78x = 495,591,305.46
  5. Step 5: Solve for x
    x = 495,591,305.46/28,299.78
  6. Step 6: Final answer
    x = 17,512.20

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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.