Home / 12,743.61-19,129.26-9,401.38

Finding the Fourth Proportional to 12,743.61, 19,129.26 and 9,401.38

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Solution

The fourth proportional to 12,743.61, 19,129.26 and 9,401.38 is: 14,112.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.61 : 19,129.26 = 9,401.38 : x
  2. Step 2: Convert to fraction form
    12,743.61/19,129.26 = 9,401.38/x
  3. Step 3: Cross multiply
    12,743.61x = 19,129.26 × 9,401.38
  4. Step 4: Simplify right side
    12,743.61x = 179,841,299.73
  5. Step 5: Solve for x
    x = 179,841,299.73/12,743.61
  6. Step 6: Final answer
    x = 14,112.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.