Home / 20,845.84-31,257.42-7,517.02

Finding the Fourth Proportional to 20,845.84, 31,257.42 and 7,517.02

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Solution

The fourth proportional to 20,845.84, 31,257.42 and 7,517.02 is: 11,271.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,845.84 : 31,257.42 = 7,517.02 : x
  2. Step 2: Convert to fraction form
    20,845.84/31,257.42 = 7,517.02/x
  3. Step 3: Cross multiply
    20,845.84x = 31,257.42 × 7,517.02
  4. Step 4: Simplify right side
    20,845.84x = 234,962,651.29
  5. Step 5: Solve for x
    x = 234,962,651.29/20,845.84
  6. Step 6: Final answer
    x = 11,271.44

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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.