Home / 21,327.72-29,441.69-13,777.73

Finding the Fourth Proportional to 21,327.72, 29,441.69 and 13,777.73

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Solution

The fourth proportional to 21,327.72, 29,441.69 and 13,777.73 is: 19,019.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,327.72 : 29,441.69 = 13,777.73 : x
  2. Step 2: Convert to fraction form
    21,327.72/29,441.69 = 13,777.73/x
  3. Step 3: Cross multiply
    21,327.72x = 29,441.69 × 13,777.73
  4. Step 4: Simplify right side
    21,327.72x = 405,639,439.47
  5. Step 5: Solve for x
    x = 405,639,439.47/21,327.72
  6. Step 6: Final answer
    x = 19,019.36

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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.