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Finding the Fourth Proportional to 12,514, 18,771 and 4,720.99

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Solution

The fourth proportional to 12,514, 18,771 and 4,720.99 is: 7,081.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,514 : 18,771 = 4,720.99 : x
  2. Step 2: Convert to fraction form
    12,514/18,771 = 4,720.99/x
  3. Step 3: Cross multiply
    12,514x = 18,771 × 4,720.99
  4. Step 4: Simplify right side
    12,514x = 88,617,703.29
  5. Step 5: Solve for x
    x = 88,617,703.29/12,514
  6. Step 6: Final answer
    x = 7,081.49

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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.