Home / 13,821.28-19,072.79-8,156.24

Finding the Fourth Proportional to 13,821.28, 19,072.79 and 8,156.24

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Solution

The fourth proportional to 13,821.28, 19,072.79 and 8,156.24 is: 11,255.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.28 : 19,072.79 = 8,156.24 : x
  2. Step 2: Convert to fraction form
    13,821.28/19,072.79 = 8,156.24/x
  3. Step 3: Cross multiply
    13,821.28x = 19,072.79 × 8,156.24
  4. Step 4: Simplify right side
    13,821.28x = 155,562,116.56
  5. Step 5: Solve for x
    x = 155,562,116.56/13,821.28
  6. Step 6: Final answer
    x = 11,255.26

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1.5x scale

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.