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Finding the Fourth Proportional to 28,738.53, 43,102.80 and 7,957.17

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Solution

The fourth proportional to 28,738.53, 43,102.80 and 7,957.17 is: 11,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.53 : 43,102.80 = 7,957.17 : x
  2. Step 2: Convert to fraction form
    28,738.53/43,102.80 = 7,957.17/x
  3. Step 3: Cross multiply
    28,738.53x = 43,102.80 × 7,957.17
  4. Step 4: Simplify right side
    28,738.53x = 342,976,307.08
  5. Step 5: Solve for x
    x = 342,976,307.08/28,738.53
  6. Step 6: Final answer
    x = 11,934.37

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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.