Home / 13,881.72-19,157.26-7,912.42

Finding the Fourth Proportional to 13,881.72, 19,157.26 and 7,912.42

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Solution

The fourth proportional to 13,881.72, 19,157.26 and 7,912.42 is: 10,919.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.72 : 19,157.26 = 7,912.42 : x
  2. Step 2: Convert to fraction form
    13,881.72/19,157.26 = 7,912.42/x
  3. Step 3: Cross multiply
    13,881.72x = 19,157.26 × 7,912.42
  4. Step 4: Simplify right side
    13,881.72x = 151,580,287.17
  5. Step 5: Solve for x
    x = 151,580,287.17/13,881.72
  6. Step 6: Final answer
    x = 10,919.42

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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.