Home / 14,079.26-19,431.44-8,109.78

Finding the Fourth Proportional to 14,079.26, 19,431.44 and 8,109.78

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Solution

The fourth proportional to 14,079.26, 19,431.44 and 8,109.78 is: 11,192.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.26 : 19,431.44 = 8,109.78 : x
  2. Step 2: Convert to fraction form
    14,079.26/19,431.44 = 8,109.78/x
  3. Step 3: Cross multiply
    14,079.26x = 19,431.44 × 8,109.78
  4. Step 4: Simplify right side
    14,079.26x = 157,584,703.48
  5. Step 5: Solve for x
    x = 157,584,703.48/14,079.26
  6. Step 6: Final answer
    x = 11,192.68

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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.