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Finding the Fourth Proportional to 10,937.60, 16,382.10 and 8,993.60

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Solution

The fourth proportional to 10,937.60, 16,382.10 and 8,993.60 is: 13,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,937.60 : 16,382.10 = 8,993.60 : x
  2. Step 2: Convert to fraction form
    10,937.60/16,382.10 = 8,993.60/x
  3. Step 3: Cross multiply
    10,937.60x = 16,382.10 × 8,993.60
  4. Step 4: Simplify right side
    10,937.60x = 147,334,054.56
  5. Step 5: Solve for x
    x = 147,334,054.56/10,937.60
  6. Step 6: Final answer
    x = 13,470.42

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1.5x scale

Why These Related Problems?

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