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Finding the Fourth Proportional to 36,447.98, 50,292.09 and 21,128.99

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Solution

The fourth proportional to 36,447.98, 50,292.09 and 21,128.99 is: 29,154.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,447.98 : 50,292.09 = 21,128.99 : x
  2. Step 2: Convert to fraction form
    36,447.98/50,292.09 = 21,128.99/x
  3. Step 3: Cross multiply
    36,447.98x = 50,292.09 × 21,128.99
  4. Step 4: Simplify right side
    36,447.98x = 1,062,620,815.23
  5. Step 5: Solve for x
    x = 1,062,620,815.23/36,447.98
  6. Step 6: Final answer
    x = 29,154.45

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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.