Home / 13,872.42-19,127.58-11,211.60

Finding the Fourth Proportional to 13,872.42, 19,127.58 and 11,211.60

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Solution

The fourth proportional to 13,872.42, 19,127.58 and 11,211.60 is: 15,458.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.42 : 19,127.58 = 11,211.60 : x
  2. Step 2: Convert to fraction form
    13,872.42/19,127.58 = 11,211.60/x
  3. Step 3: Cross multiply
    13,872.42x = 19,127.58 × 11,211.60
  4. Step 4: Simplify right side
    13,872.42x = 214,450,775.93
  5. Step 5: Solve for x
    x = 214,450,775.93/13,872.42
  6. Step 6: Final answer
    x = 15,458.79

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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.