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Finding the Fourth Proportional to 18,384.26, 27,561.81 and 6,691.10

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Solution

The fourth proportional to 18,384.26, 27,561.81 and 6,691.10 is: 10,031.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,384.26 : 27,561.81 = 6,691.10 : x
  2. Step 2: Convert to fraction form
    18,384.26/27,561.81 = 6,691.10/x
  3. Step 3: Cross multiply
    18,384.26x = 27,561.81 × 6,691.10
  4. Step 4: Simplify right side
    18,384.26x = 184,418,826.89
  5. Step 5: Solve for x
    x = 184,418,826.89/18,384.26
  6. Step 6: Final answer
    x = 10,031.34

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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.