Home / 10,787.72-16,177.32-4,212.95

Finding the Fourth Proportional to 10,787.72, 16,177.32 and 4,212.95

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Solution

The fourth proportional to 10,787.72, 16,177.32 and 4,212.95 is: 6,317.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,787.72 : 16,177.32 = 4,212.95 : x
  2. Step 2: Convert to fraction form
    10,787.72/16,177.32 = 4,212.95/x
  3. Step 3: Cross multiply
    10,787.72x = 16,177.32 × 4,212.95
  4. Step 4: Simplify right side
    10,787.72x = 68,154,159.41
  5. Step 5: Solve for x
    x = 68,154,159.41/10,787.72
  6. Step 6: Final answer
    x = 6,317.76

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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.