Home / 21,908.51-30,232.04-13,407.11

Finding the Fourth Proportional to 21,908.51, 30,232.04 and 13,407.11

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Solution

The fourth proportional to 21,908.51, 30,232.04 and 13,407.11 is: 18,500.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.51 : 30,232.04 = 13,407.11 : x
  2. Step 2: Convert to fraction form
    21,908.51/30,232.04 = 13,407.11/x
  3. Step 3: Cross multiply
    21,908.51x = 30,232.04 × 13,407.11
  4. Step 4: Simplify right side
    21,908.51x = 405,324,067.61
  5. Step 5: Solve for x
    x = 405,324,067.61/21,908.51
  6. Step 6: Final answer
    x = 18,500.76

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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.