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Finding the Fourth Proportional to 15,083.21, 20,814.92 and 8,368.97

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Solution

The fourth proportional to 15,083.21, 20,814.92 and 8,368.97 is: 11,549.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,083.21 : 20,814.92 = 8,368.97 : x
  2. Step 2: Convert to fraction form
    15,083.21/20,814.92 = 8,368.97/x
  3. Step 3: Cross multiply
    15,083.21x = 20,814.92 × 8,368.97
  4. Step 4: Simplify right side
    15,083.21x = 174,199,490.66
  5. Step 5: Solve for x
    x = 174,199,490.66/15,083.21
  6. Step 6: Final answer
    x = 11,549.23

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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.