Home / 20,515.11-30,750.69-14,653.95

Finding the Fourth Proportional to 20,515.11, 30,750.69 and 14,653.95

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Solution

The fourth proportional to 20,515.11, 30,750.69 and 14,653.95 is: 21,965.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,515.11 : 30,750.69 = 14,653.95 : x
  2. Step 2: Convert to fraction form
    20,515.11/30,750.69 = 14,653.95/x
  3. Step 3: Cross multiply
    20,515.11x = 30,750.69 × 14,653.95
  4. Step 4: Simplify right side
    20,515.11x = 450,619,073.73
  5. Step 5: Solve for x
    x = 450,619,073.73/20,515.11
  6. Step 6: Final answer
    x = 21,965.23

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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.