Home / 21,863.48-30,176.39-13,904.15

Finding the Fourth Proportional to 21,863.48, 30,176.39 and 13,904.15

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Solution

The fourth proportional to 21,863.48, 30,176.39 and 13,904.15 is: 19,190.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.48 : 30,176.39 = 13,904.15 : x
  2. Step 2: Convert to fraction form
    21,863.48/30,176.39 = 13,904.15/x
  3. Step 3: Cross multiply
    21,863.48x = 30,176.39 × 13,904.15
  4. Step 4: Simplify right side
    21,863.48x = 419,577,163.22
  5. Step 5: Solve for x
    x = 419,577,163.22/21,863.48
  6. Step 6: Final answer
    x = 19,190.77

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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.