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Finding the Fourth Proportional to 36,344.40, 54,487.80 and 19,928.40

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Solution

The fourth proportional to 36,344.40, 54,487.80 and 19,928.40 is: 29,876.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,344.40 : 54,487.80 = 19,928.40 : x
  2. Step 2: Convert to fraction form
    36,344.40/54,487.80 = 19,928.40/x
  3. Step 3: Cross multiply
    36,344.40x = 54,487.80 × 19,928.40
  4. Step 4: Simplify right side
    36,344.40x = 1,085,854,673.52
  5. Step 5: Solve for x
    x = 1,085,854,673.52/36,344.40
  6. Step 6: Final answer
    x = 29,876.81

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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.