Home / 28,912.76-43,372.04-7,853.12

Finding the Fourth Proportional to 28,912.76, 43,372.04 and 7,853.12

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Solution

The fourth proportional to 28,912.76, 43,372.04 and 7,853.12 is: 11,780.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.76 : 43,372.04 = 7,853.12 : x
  2. Step 2: Convert to fraction form
    28,912.76/43,372.04 = 7,853.12/x
  3. Step 3: Cross multiply
    28,912.76x = 43,372.04 × 7,853.12
  4. Step 4: Simplify right side
    28,912.76x = 340,605,834.76
  5. Step 5: Solve for x
    x = 340,605,834.76/28,912.76
  6. Step 6: Final answer
    x = 11,780.47

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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.