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Finding the Fourth Proportional to 13,803.72, 19,053.48 and 8,138.04

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Solution

The fourth proportional to 13,803.72, 19,053.48 and 8,138.04 is: 11,233.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.72 : 19,053.48 = 8,138.04 : x
  2. Step 2: Convert to fraction form
    13,803.72/19,053.48 = 8,138.04/x
  3. Step 3: Cross multiply
    13,803.72x = 19,053.48 × 8,138.04
  4. Step 4: Simplify right side
    13,803.72x = 155,057,982.38
  5. Step 5: Solve for x
    x = 155,057,982.38/13,803.72
  6. Step 6: Final answer
    x = 11,233.06

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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.