Home / 28,067.10-42,108.30-11,423.40

Finding the Fourth Proportional to 28,067.10, 42,108.30 and 11,423.40

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Solution

The fourth proportional to 28,067.10, 42,108.30 and 11,423.40 is: 17,138.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,067.10 : 42,108.30 = 11,423.40 : x
  2. Step 2: Convert to fraction form
    28,067.10/42,108.30 = 11,423.40/x
  3. Step 3: Cross multiply
    28,067.10x = 42,108.30 × 11,423.40
  4. Step 4: Simplify right side
    28,067.10x = 481,019,954.22
  5. Step 5: Solve for x
    x = 481,019,954.22/28,067.10
  6. Step 6: Final answer
    x = 17,138.21

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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.