Home / 13,376.31-20,063.65-4,142.31

Finding the Fourth Proportional to 13,376.31, 20,063.65 and 4,142.31

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Solution

The fourth proportional to 13,376.31, 20,063.65 and 4,142.31 is: 6,213.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.31 : 20,063.65 = 4,142.31 : x
  2. Step 2: Convert to fraction form
    13,376.31/20,063.65 = 4,142.31/x
  3. Step 3: Cross multiply
    13,376.31x = 20,063.65 × 4,142.31
  4. Step 4: Simplify right side
    13,376.31x = 83,109,858.03
  5. Step 5: Solve for x
    x = 83,109,858.03/13,376.31
  6. Step 6: Final answer
    x = 6,213.21

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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.