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Finding the Fourth Proportional to 28,776.83, 39,702.89 and 16,199.15

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Solution

The fourth proportional to 28,776.83, 39,702.89 and 16,199.15 is: 22,349.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,776.83 : 39,702.89 = 16,199.15 : x
  2. Step 2: Convert to fraction form
    28,776.83/39,702.89 = 16,199.15/x
  3. Step 3: Cross multiply
    28,776.83x = 39,702.89 × 16,199.15
  4. Step 4: Simplify right side
    28,776.83x = 643,152,989.55
  5. Step 5: Solve for x
    x = 643,152,989.55/28,776.83
  6. Step 6: Final answer
    x = 22,349.68

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.