Home / 20,787.04-31,180.55-7,633.72

Finding the Fourth Proportional to 20,787.04, 31,180.55 and 7,633.72

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Solution

The fourth proportional to 20,787.04, 31,180.55 and 7,633.72 is: 11,450.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.04 : 31,180.55 = 7,633.72 : x
  2. Step 2: Convert to fraction form
    20,787.04/31,180.55 = 7,633.72/x
  3. Step 3: Cross multiply
    20,787.04x = 31,180.55 × 7,633.72
  4. Step 4: Simplify right side
    20,787.04x = 238,023,451.33
  5. Step 5: Solve for x
    x = 238,023,451.33/20,787.04
  6. Step 6: Final answer
    x = 11,450.57

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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.