Home / 36,218.50-49,981.71-21,121.63

Finding the Fourth Proportional to 36,218.50, 49,981.71 and 21,121.63

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Solution

The fourth proportional to 36,218.50, 49,981.71 and 21,121.63 is: 29,147.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,218.50 : 49,981.71 = 21,121.63 : x
  2. Step 2: Convert to fraction form
    36,218.50/49,981.71 = 21,121.63/x
  3. Step 3: Cross multiply
    36,218.50x = 49,981.71 × 21,121.63
  4. Step 4: Simplify right side
    36,218.50x = 1,055,695,185.39
  5. Step 5: Solve for x
    x = 1,055,695,185.39/36,218.50
  6. Step 6: Final answer
    x = 29,147.95

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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.