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Finding the Fourth Proportional to 18,274.55, 27,411.78 and 7,173.47

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Solution

The fourth proportional to 18,274.55, 27,411.78 and 7,173.47 is: 10,760.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.55 : 27,411.78 = 7,173.47 : x
  2. Step 2: Convert to fraction form
    18,274.55/27,411.78 = 7,173.47/x
  3. Step 3: Cross multiply
    18,274.55x = 27,411.78 × 7,173.47
  4. Step 4: Simplify right side
    18,274.55x = 196,637,650.01
  5. Step 5: Solve for x
    x = 196,637,650.01/18,274.55
  6. Step 6: Final answer
    x = 10,760.19

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1.5x scale

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.