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Finding the Fourth Proportional to 18,423.15, 27,639.05 and 7,330.47

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Solution

The fourth proportional to 18,423.15, 27,639.05 and 7,330.47 is: 10,997.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423.15 : 27,639.05 = 7,330.47 : x
  2. Step 2: Convert to fraction form
    18,423.15/27,639.05 = 7,330.47/x
  3. Step 3: Cross multiply
    18,423.15x = 27,639.05 × 7,330.47
  4. Step 4: Simplify right side
    18,423.15x = 202,607,226.85
  5. Step 5: Solve for x
    x = 202,607,226.85/18,423.15
  6. Step 6: Final answer
    x = 10,997.43

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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.