Home / 15,889.62-21,902.60-12,100.70

Finding the Fourth Proportional to 15,889.62, 21,902.60 and 12,100.70

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Solution

The fourth proportional to 15,889.62, 21,902.60 and 12,100.70 is: 16,679.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,889.62 : 21,902.60 = 12,100.70 : x
  2. Step 2: Convert to fraction form
    15,889.62/21,902.60 = 12,100.70/x
  3. Step 3: Cross multiply
    15,889.62x = 21,902.60 × 12,100.70
  4. Step 4: Simplify right side
    15,889.62x = 265,036,791.82
  5. Step 5: Solve for x
    x = 265,036,791.82/15,889.62
  6. Step 6: Final answer
    x = 16,679.87

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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.