Home / 28,016.82-42,013.89-11,385.09

Finding the Fourth Proportional to 28,016.82, 42,013.89 and 11,385.09

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Solution

The fourth proportional to 28,016.82, 42,013.89 and 11,385.09 is: 17,073.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,016.82 : 42,013.89 = 11,385.09 : x
  2. Step 2: Convert to fraction form
    28,016.82/42,013.89 = 11,385.09/x
  3. Step 3: Cross multiply
    28,016.82x = 42,013.89 × 11,385.09
  4. Step 4: Simplify right side
    28,016.82x = 478,331,918.90
  5. Step 5: Solve for x
    x = 478,331,918.90/28,016.82
  6. Step 6: Final answer
    x = 17,073.03

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1.5x scale

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.