Home / 13,163.36-18,165.75-7,195.28

Finding the Fourth Proportional to 13,163.36, 18,165.75 and 7,195.28

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Solution

The fourth proportional to 13,163.36, 18,165.75 and 7,195.28 is: 9,929.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.36 : 18,165.75 = 7,195.28 : x
  2. Step 2: Convert to fraction form
    13,163.36/18,165.75 = 7,195.28/x
  3. Step 3: Cross multiply
    13,163.36x = 18,165.75 × 7,195.28
  4. Step 4: Simplify right side
    13,163.36x = 130,707,657.66
  5. Step 5: Solve for x
    x = 130,707,657.66/13,163.36
  6. Step 6: Final answer
    x = 9,929.66

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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.