Home / 13,831.12-20,740.19-5,059.90

Finding the Fourth Proportional to 13,831.12, 20,740.19 and 5,059.90

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Solution

The fourth proportional to 13,831.12, 20,740.19 and 5,059.90 is: 7,587.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,831.12 : 20,740.19 = 5,059.90 : x
  2. Step 2: Convert to fraction form
    13,831.12/20,740.19 = 5,059.90/x
  3. Step 3: Cross multiply
    13,831.12x = 20,740.19 × 5,059.90
  4. Step 4: Simplify right side
    13,831.12x = 104,943,183.68
  5. Step 5: Solve for x
    x = 104,943,183.68/13,831.12
  6. Step 6: Final answer
    x = 7,587.47

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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.