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Finding the Fourth Proportional to 16,385.95, 24,581.36 and 5,290.57

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Solution

The fourth proportional to 16,385.95, 24,581.36 and 5,290.57 is: 7,936.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,385.95 : 24,581.36 = 5,290.57 : x
  2. Step 2: Convert to fraction form
    16,385.95/24,581.36 = 5,290.57/x
  3. Step 3: Cross multiply
    16,385.95x = 24,581.36 × 5,290.57
  4. Step 4: Simplify right side
    16,385.95x = 130,049,405.78
  5. Step 5: Solve for x
    x = 130,049,405.78/16,385.95
  6. Step 6: Final answer
    x = 7,936.64

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.