Home / 13,831.52-20,742.49-8,558.47

Finding the Fourth Proportional to 13,831.52, 20,742.49 and 8,558.47

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Solution

The fourth proportional to 13,831.52, 20,742.49 and 8,558.47 is: 12,834.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.52 : 20,742.49 = 8,558.47 : x
  2. Step 2: Convert to fraction form
    13,831.52/20,742.49 = 8,558.47/x
  3. Step 3: Cross multiply
    13,831.52x = 20,742.49 × 8,558.47
  4. Step 4: Simplify right side
    13,831.52x = 177,523,978.39
  5. Step 5: Solve for x
    x = 177,523,978.39/13,831.52
  6. Step 6: Final answer
    x = 12,834.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.