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Finding the Fourth Proportional to 28,003.01, 42,022.10 and 11,363.12

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Solution

The fourth proportional to 28,003.01, 42,022.10 and 11,363.12 is: 17,051.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.01 : 42,022.10 = 11,363.12 : x
  2. Step 2: Convert to fraction form
    28,003.01/42,022.10 = 11,363.12/x
  3. Step 3: Cross multiply
    28,003.01x = 42,022.10 × 11,363.12
  4. Step 4: Simplify right side
    28,003.01x = 477,501,983.25
  5. Step 5: Solve for x
    x = 477,501,983.25/28,003.01
  6. Step 6: Final answer
    x = 17,051.81

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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.