Home / 20,830.94-31,249.67-6,787.71

Finding the Fourth Proportional to 20,830.94, 31,249.67 and 6,787.71

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Solution

The fourth proportional to 20,830.94, 31,249.67 and 6,787.71 is: 10,182.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.94 : 31,249.67 = 6,787.71 : x
  2. Step 2: Convert to fraction form
    20,830.94/31,249.67 = 6,787.71/x
  3. Step 3: Cross multiply
    20,830.94x = 31,249.67 × 6,787.71
  4. Step 4: Simplify right side
    20,830.94x = 212,113,663.62
  5. Step 5: Solve for x
    x = 212,113,663.62/20,830.94
  6. Step 6: Final answer
    x = 10,182.63

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1.5x scale

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.