Home / 13,837.72-20,668.31-12,519.43

Finding the Fourth Proportional to 13,837.72, 20,668.31 and 12,519.43

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Solution

The fourth proportional to 13,837.72, 20,668.31 and 12,519.43 is: 18,699.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,837.72 : 20,668.31 = 12,519.43 : x
  2. Step 2: Convert to fraction form
    13,837.72/20,668.31 = 12,519.43/x
  3. Step 3: Cross multiply
    13,837.72x = 20,668.31 × 12,519.43
  4. Step 4: Simplify right side
    13,837.72x = 258,755,460.26
  5. Step 5: Solve for x
    x = 258,755,460.26/13,837.72
  6. Step 6: Final answer
    x = 18,699.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.