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Finding the Fourth Proportional to 36,843.40, 55,322.70 and 21,291.40

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Solution

The fourth proportional to 36,843.40, 55,322.70 and 21,291.40 is: 31,970.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,843.40 : 55,322.70 = 21,291.40 : x
  2. Step 2: Convert to fraction form
    36,843.40/55,322.70 = 21,291.40/x
  3. Step 3: Cross multiply
    36,843.40x = 55,322.70 × 21,291.40
  4. Step 4: Simplify right side
    36,843.40x = 1,177,897,734.78
  5. Step 5: Solve for x
    x = 1,177,897,734.78/36,843.40
  6. Step 6: Final answer
    x = 31,970.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.