Home / 20,518.11-30,755.19-14,656.95

Finding the Fourth Proportional to 20,518.11, 30,755.19 and 14,656.95

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Solution

The fourth proportional to 20,518.11, 30,755.19 and 14,656.95 is: 21,969.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,518.11 : 30,755.19 = 14,656.95 : x
  2. Step 2: Convert to fraction form
    20,518.11/30,755.19 = 14,656.95/x
  3. Step 3: Cross multiply
    20,518.11x = 30,755.19 × 14,656.95
  4. Step 4: Simplify right side
    20,518.11x = 450,777,282.07
  5. Step 5: Solve for x
    x = 450,777,282.07/20,518.11
  6. Step 6: Final answer
    x = 21,969.73

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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.