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Finding the Fourth Proportional to 18,753.60, 25,879.92 and 10,370.16

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Solution

The fourth proportional to 18,753.60, 25,879.92 and 10,370.16 is: 14,310.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.60 : 25,879.92 = 10,370.16 : x
  2. Step 2: Convert to fraction form
    18,753.60/25,879.92 = 10,370.16/x
  3. Step 3: Cross multiply
    18,753.60x = 25,879.92 × 10,370.16
  4. Step 4: Simplify right side
    18,753.60x = 268,378,911.19
  5. Step 5: Solve for x
    x = 268,378,911.19/18,753.60
  6. Step 6: Final answer
    x = 14,310.79

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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.