Home / 13,825.28-19,080.26-8,161.90

Finding the Fourth Proportional to 13,825.28, 19,080.26 and 8,161.90

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Solution

The fourth proportional to 13,825.28, 19,080.26 and 8,161.90 is: 11,264.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.28 : 19,080.26 = 8,161.90 : x
  2. Step 2: Convert to fraction form
    13,825.28/19,080.26 = 8,161.90/x
  3. Step 3: Cross multiply
    13,825.28x = 19,080.26 × 8,161.90
  4. Step 4: Simplify right side
    13,825.28x = 155,731,116.19
  5. Step 5: Solve for x
    x = 155,731,116.19/13,825.28
  6. Step 6: Final answer
    x = 11,264.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.