Home / 15,499.88-21,351.87-11,238.42

Finding the Fourth Proportional to 15,499.88, 21,351.87 and 11,238.42

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Solution

The fourth proportional to 15,499.88, 21,351.87 and 11,238.42 is: 15,481.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.88 : 21,351.87 = 11,238.42 : x
  2. Step 2: Convert to fraction form
    15,499.88/21,351.87 = 11,238.42/x
  3. Step 3: Cross multiply
    15,499.88x = 21,351.87 × 11,238.42
  4. Step 4: Simplify right side
    15,499.88x = 239,961,242.81
  5. Step 5: Solve for x
    x = 239,961,242.81/15,499.88
  6. Step 6: Final answer
    x = 15,481.49

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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.