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Finding the Fourth Proportional to 15,083.92, 20,814.81 and 8,369.32

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Solution

The fourth proportional to 15,083.92, 20,814.81 and 8,369.32 is: 11,549.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,083.92 : 20,814.81 = 8,369.32 : x
  2. Step 2: Convert to fraction form
    15,083.92/20,814.81 = 8,369.32/x
  3. Step 3: Cross multiply
    15,083.92x = 20,814.81 × 8,369.32
  4. Step 4: Simplify right side
    15,083.92x = 174,205,805.63
  5. Step 5: Solve for x
    x = 174,205,805.63/15,083.92
  6. Step 6: Final answer
    x = 11,549.11

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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.