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Finding the Fourth Proportional to 15,083.06, 20,813.90 and 8,368.61

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Solution

The fourth proportional to 15,083.06, 20,813.90 and 8,368.61 is: 11,548.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,083.06 : 20,813.90 = 8,368.61 : x
  2. Step 2: Convert to fraction form
    15,083.06/20,813.90 = 8,368.61/x
  3. Step 3: Cross multiply
    15,083.06x = 20,813.90 × 8,368.61
  4. Step 4: Simplify right side
    15,083.06x = 174,183,265.77
  5. Step 5: Solve for x
    x = 174,183,265.77/15,083.06
  6. Step 6: Final answer
    x = 11,548.27

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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.