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Finding the Fourth Proportional to 24,515.80, 36,735.30 and 21,213.40

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Solution

The fourth proportional to 24,515.80, 36,735.30 and 21,213.40 is: 31,786.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,515.80 : 36,735.30 = 21,213.40 : x
  2. Step 2: Convert to fraction form
    24,515.80/36,735.30 = 21,213.40/x
  3. Step 3: Cross multiply
    24,515.80x = 36,735.30 × 21,213.40
  4. Step 4: Simplify right side
    24,515.80x = 779,280,613.02
  5. Step 5: Solve for x
    x = 779,280,613.02/24,515.80
  6. Step 6: Final answer
    x = 31,786.87

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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.