Home / 13,161.81-18,163.56-7,193.85

Finding the Fourth Proportional to 13,161.81, 18,163.56 and 7,193.85

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Solution

The fourth proportional to 13,161.81, 18,163.56 and 7,193.85 is: 9,927.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.81 : 18,163.56 = 7,193.85 : x
  2. Step 2: Convert to fraction form
    13,161.81/18,163.56 = 7,193.85/x
  3. Step 3: Cross multiply
    13,161.81x = 18,163.56 × 7,193.85
  4. Step 4: Simplify right side
    13,161.81x = 130,665,926.11
  5. Step 5: Solve for x
    x = 130,665,926.11/13,161.81
  6. Step 6: Final answer
    x = 9,927.66

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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.