Home / 13,167.37-18,172.19-7,199.90

Finding the Fourth Proportional to 13,167.37, 18,172.19 and 7,199.90

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Solution

The fourth proportional to 13,167.37, 18,172.19 and 7,199.90 is: 9,936.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,167.37 : 18,172.19 = 7,199.90 : x
  2. Step 2: Convert to fraction form
    13,167.37/18,172.19 = 7,199.90/x
  3. Step 3: Cross multiply
    13,167.37x = 18,172.19 × 7,199.90
  4. Step 4: Simplify right side
    13,167.37x = 130,837,914.78
  5. Step 5: Solve for x
    x = 130,837,914.78/13,167.37
  6. Step 6: Final answer
    x = 9,936.53

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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.