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Finding the Fourth Proportional to 15,907.54, 21,960.30 and 9,942.52

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Solution

The fourth proportional to 15,907.54, 21,960.30 and 9,942.52 is: 13,725.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,907.54 : 21,960.30 = 9,942.52 : x
  2. Step 2: Convert to fraction form
    15,907.54/21,960.30 = 9,942.52/x
  3. Step 3: Cross multiply
    15,907.54x = 21,960.30 × 9,942.52
  4. Step 4: Simplify right side
    15,907.54x = 218,340,721.96
  5. Step 5: Solve for x
    x = 218,340,721.96/15,907.54
  6. Step 6: Final answer
    x = 13,725.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.