Home / 14,109.09-19,469.85-8,142.66

Finding the Fourth Proportional to 14,109.09, 19,469.85 and 8,142.66

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Solution

The fourth proportional to 14,109.09, 19,469.85 and 8,142.66 is: 11,236.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,109.09 : 19,469.85 = 8,142.66 : x
  2. Step 2: Convert to fraction form
    14,109.09/19,469.85 = 8,142.66/x
  3. Step 3: Cross multiply
    14,109.09x = 19,469.85 × 8,142.66
  4. Step 4: Simplify right side
    14,109.09x = 158,536,368.80
  5. Step 5: Solve for x
    x = 158,536,368.80/14,109.09
  6. Step 6: Final answer
    x = 11,236.47

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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.