Home / 20,787.16-31,180.74-7,633.84

Finding the Fourth Proportional to 20,787.16, 31,180.74 and 7,633.84

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Solution

The fourth proportional to 20,787.16, 31,180.74 and 7,633.84 is: 11,450.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,787.16 : 31,180.74 = 7,633.84 : x
  2. Step 2: Convert to fraction form
    20,787.16/31,180.74 = 7,633.84/x
  3. Step 3: Cross multiply
    20,787.16x = 31,180.74 × 7,633.84
  4. Step 4: Simplify right side
    20,787.16x = 238,028,780.24
  5. Step 5: Solve for x
    x = 238,028,780.24/20,787.16
  6. Step 6: Final answer
    x = 11,450.76

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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.