Home / 13,163.69-18,165.85-7,195.36

Finding the Fourth Proportional to 13,163.69, 18,165.85 and 7,195.36

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Solution

The fourth proportional to 13,163.69, 18,165.85 and 7,195.36 is: 9,929.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.69 : 18,165.85 = 7,195.36 : x
  2. Step 2: Convert to fraction form
    13,163.69/18,165.85 = 7,195.36/x
  3. Step 3: Cross multiply
    13,163.69x = 18,165.85 × 7,195.36
  4. Step 4: Simplify right side
    13,163.69x = 130,709,830.46
  5. Step 5: Solve for x
    x = 130,709,830.46/13,163.69
  6. Step 6: Final answer
    x = 9,929.57

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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.