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Finding the Fourth Proportional to 13,101.40, 19,608.90 and 10,163.80

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Solution

The fourth proportional to 13,101.40, 19,608.90 and 10,163.80 is: 15,212.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,101.40 : 19,608.90 = 10,163.80 : x
  2. Step 2: Convert to fraction form
    13,101.40/19,608.90 = 10,163.80/x
  3. Step 3: Cross multiply
    13,101.40x = 19,608.90 × 10,163.80
  4. Step 4: Simplify right side
    13,101.40x = 199,300,937.82
  5. Step 5: Solve for x
    x = 199,300,937.82/13,101.40
  6. Step 6: Final answer
    x = 15,212.19

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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.