Home / 13,161.80-18,163.53-7,193.72

Finding the Fourth Proportional to 13,161.80, 18,163.53 and 7,193.72

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Solution

The fourth proportional to 13,161.80, 18,163.53 and 7,193.72 is: 9,927.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.80 : 18,163.53 = 7,193.72 : x
  2. Step 2: Convert to fraction form
    13,161.80/18,163.53 = 7,193.72/x
  3. Step 3: Cross multiply
    13,161.80x = 18,163.53 × 7,193.72
  4. Step 4: Simplify right side
    13,161.80x = 130,663,258.21
  5. Step 5: Solve for x
    x = 130,663,258.21/13,161.80
  6. Step 6: Final answer
    x = 9,927.46

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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.