Home / 13,887.72-20,831.40-4,026.96

Finding the Fourth Proportional to 13,887.72, 20,831.40 and 4,026.96

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Solution

The fourth proportional to 13,887.72, 20,831.40 and 4,026.96 is: 6,040.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.72 : 20,831.40 = 4,026.96 : x
  2. Step 2: Convert to fraction form
    13,887.72/20,831.40 = 4,026.96/x
  3. Step 3: Cross multiply
    13,887.72x = 20,831.40 × 4,026.96
  4. Step 4: Simplify right side
    13,887.72x = 83,887,214.54
  5. Step 5: Solve for x
    x = 83,887,214.54/13,887.72
  6. Step 6: Final answer
    x = 6,040.39

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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.