Home / 20,922.24-31,376.88-7,068

Finding the Fourth Proportional to 20,922.24, 31,376.88 and 7,068

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Solution

The fourth proportional to 20,922.24, 31,376.88 and 7,068 is: 10,599.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.24 : 31,376.88 = 7,068 : x
  2. Step 2: Convert to fraction form
    20,922.24/31,376.88 = 7,068/x
  3. Step 3: Cross multiply
    20,922.24x = 31,376.88 × 7,068
  4. Step 4: Simplify right side
    20,922.24x = 221,771,787.84
  5. Step 5: Solve for x
    x = 221,771,787.84/20,922.24
  6. Step 6: Final answer
    x = 10,599.81

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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.