Home / 14,218.56-21,326.40-3,831.36

Finding the Fourth Proportional to 14,218.56, 21,326.40 and 3,831.36

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Solution

The fourth proportional to 14,218.56, 21,326.40 and 3,831.36 is: 5,746.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,218.56 : 21,326.40 = 3,831.36 : x
  2. Step 2: Convert to fraction form
    14,218.56/21,326.40 = 3,831.36/x
  3. Step 3: Cross multiply
    14,218.56x = 21,326.40 × 3,831.36
  4. Step 4: Simplify right side
    14,218.56x = 81,709,115.90
  5. Step 5: Solve for x
    x = 81,709,115.90/14,218.56
  6. Step 6: Final answer
    x = 5,746.65

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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.