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Finding the Fourth Proportional to 14,673.75, 20,249.81 and 8,386.11

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Solution

The fourth proportional to 14,673.75, 20,249.81 and 8,386.11 is: 11,572.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,673.75 : 20,249.81 = 8,386.11 : x
  2. Step 2: Convert to fraction form
    14,673.75/20,249.81 = 8,386.11/x
  3. Step 3: Cross multiply
    14,673.75x = 20,249.81 × 8,386.11
  4. Step 4: Simplify right side
    14,673.75x = 169,817,092.21
  5. Step 5: Solve for x
    x = 169,817,092.21/14,673.75
  6. Step 6: Final answer
    x = 11,572.85

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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.