Home / 14,179.09-19,569-8,131.70

Finding the Fourth Proportional to 14,179.09, 19,569 and 8,131.70

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Solution

The fourth proportional to 14,179.09, 19,569 and 8,131.70 is: 11,222.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,179.09 : 19,569 = 8,131.70 : x
  2. Step 2: Convert to fraction form
    14,179.09/19,569 = 8,131.70/x
  3. Step 3: Cross multiply
    14,179.09x = 19,569 × 8,131.70
  4. Step 4: Simplify right side
    14,179.09x = 159,129,237.30
  5. Step 5: Solve for x
    x = 159,129,237.30/14,179.09
  6. Step 6: Final answer
    x = 11,222.81

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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.