Home / 14,418.72-19,897.44-8,131.68

Finding the Fourth Proportional to 14,418.72, 19,897.44 and 8,131.68

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Solution

The fourth proportional to 14,418.72, 19,897.44 and 8,131.68 is: 11,221.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,418.72 : 19,897.44 = 8,131.68 : x
  2. Step 2: Convert to fraction form
    14,418.72/19,897.44 = 8,131.68/x
  3. Step 3: Cross multiply
    14,418.72x = 19,897.44 × 8,131.68
  4. Step 4: Simplify right side
    14,418.72x = 161,799,614.90
  5. Step 5: Solve for x
    x = 161,799,614.90/14,418.72
  6. Step 6: Final answer
    x = 11,221.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.