Home / 13,611.57-18,777.45-8,831.08

Finding the Fourth Proportional to 13,611.57, 18,777.45 and 8,831.08

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Solution

The fourth proportional to 13,611.57, 18,777.45 and 8,831.08 is: 12,182.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.57 : 18,777.45 = 8,831.08 : x
  2. Step 2: Convert to fraction form
    13,611.57/18,777.45 = 8,831.08/x
  3. Step 3: Cross multiply
    13,611.57x = 18,777.45 × 8,831.08
  4. Step 4: Simplify right side
    13,611.57x = 165,825,163.15
  5. Step 5: Solve for x
    x = 165,825,163.15/13,611.57
  6. Step 6: Final answer
    x = 12,182.66

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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.