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Finding the Fourth Proportional to 13,363.43, 18,442.02 and 8,647.71

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Solution

The fourth proportional to 13,363.43, 18,442.02 and 8,647.71 is: 11,934.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,363.43 : 18,442.02 = 8,647.71 : x
  2. Step 2: Convert to fraction form
    13,363.43/18,442.02 = 8,647.71/x
  3. Step 3: Cross multiply
    13,363.43x = 18,442.02 × 8,647.71
  4. Step 4: Simplify right side
    13,363.43x = 159,481,240.77
  5. Step 5: Solve for x
    x = 159,481,240.77/13,363.43
  6. Step 6: Final answer
    x = 11,934.16

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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.