Home / 13,161.96-18,163.54-7,856.66

Finding the Fourth Proportional to 13,161.96, 18,163.54 and 7,856.66

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Solution

The fourth proportional to 13,161.96, 18,163.54 and 7,856.66 is: 10,842.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.96 : 18,163.54 = 7,856.66 : x
  2. Step 2: Convert to fraction form
    13,161.96/18,163.54 = 7,856.66/x
  3. Step 3: Cross multiply
    13,161.96x = 18,163.54 × 7,856.66
  4. Step 4: Simplify right side
    13,161.96x = 142,704,813.41
  5. Step 5: Solve for x
    x = 142,704,813.41/13,161.96
  6. Step 6: Final answer
    x = 10,842.22

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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.