Home / 14,278.43-21,419.07-4,917.21

Finding the Fourth Proportional to 14,278.43, 21,419.07 and 4,917.21

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Solution

The fourth proportional to 14,278.43, 21,419.07 and 4,917.21 is: 7,376.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.43 : 21,419.07 = 4,917.21 : x
  2. Step 2: Convert to fraction form
    14,278.43/21,419.07 = 4,917.21/x
  3. Step 3: Cross multiply
    14,278.43x = 21,419.07 × 4,917.21
  4. Step 4: Simplify right side
    14,278.43x = 105,322,065.19
  5. Step 5: Solve for x
    x = 105,322,065.19/14,278.43
  6. Step 6: Final answer
    x = 7,376.31

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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.