Home / 21,908.25-30,238.11-13,948.79

Finding the Fourth Proportional to 21,908.25, 30,238.11 and 13,948.79

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Solution

The fourth proportional to 21,908.25, 30,238.11 and 13,948.79 is: 19,252.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.25 : 30,238.11 = 13,948.79 : x
  2. Step 2: Convert to fraction form
    21,908.25/30,238.11 = 13,948.79/x
  3. Step 3: Cross multiply
    21,908.25x = 30,238.11 × 13,948.79
  4. Step 4: Simplify right side
    21,908.25x = 421,784,895.20
  5. Step 5: Solve for x
    x = 421,784,895.20/21,908.25
  6. Step 6: Final answer
    x = 19,252.33

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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.