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Finding the Fourth Proportional to 36,260, 54,390.36 and 12,887.36

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Solution

The fourth proportional to 36,260, 54,390.36 and 12,887.36 is: 19,331.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,260 : 54,390.36 = 12,887.36 : x
  2. Step 2: Convert to fraction form
    36,260/54,390.36 = 12,887.36/x
  3. Step 3: Cross multiply
    36,260x = 54,390.36 × 12,887.36
  4. Step 4: Simplify right side
    36,260x = 700,948,149.85
  5. Step 5: Solve for x
    x = 700,948,149.85/36,260
  6. Step 6: Final answer
    x = 19,331.17

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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.