Home / 20,392.53-30,585.15-12,974.95

Finding the Fourth Proportional to 20,392.53, 30,585.15 and 12,974.95

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Solution

The fourth proportional to 20,392.53, 30,585.15 and 12,974.95 is: 19,460.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.53 : 30,585.15 = 12,974.95 : x
  2. Step 2: Convert to fraction form
    20,392.53/30,585.15 = 12,974.95/x
  3. Step 3: Cross multiply
    20,392.53x = 30,585.15 × 12,974.95
  4. Step 4: Simplify right side
    20,392.53x = 396,840,836.02
  5. Step 5: Solve for x
    x = 396,840,836.02/20,392.53
  6. Step 6: Final answer
    x = 19,460.11

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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.