Home / 20,118.52-27,763.02-11,165.79

Finding the Fourth Proportional to 20,118.52, 27,763.02 and 11,165.79

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Solution

The fourth proportional to 20,118.52, 27,763.02 and 11,165.79 is: 15,408.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118.52 : 27,763.02 = 11,165.79 : x
  2. Step 2: Convert to fraction form
    20,118.52/27,763.02 = 11,165.79/x
  3. Step 3: Cross multiply
    20,118.52x = 27,763.02 × 11,165.79
  4. Step 4: Simplify right side
    20,118.52x = 309,996,092.96
  5. Step 5: Solve for x
    x = 309,996,092.96/20,118.52
  6. Step 6: Final answer
    x = 15,408.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.