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Finding the Fourth Proportional to 18,140.80, 25,035.52 and 10,183.68

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Solution

The fourth proportional to 18,140.80, 25,035.52 and 10,183.68 is: 14,054.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.80 : 25,035.52 = 10,183.68 : x
  2. Step 2: Convert to fraction form
    18,140.80/25,035.52 = 10,183.68/x
  3. Step 3: Cross multiply
    18,140.80x = 25,035.52 × 10,183.68
  4. Step 4: Simplify right side
    18,140.80x = 254,953,724.31
  5. Step 5: Solve for x
    x = 254,953,724.31/18,140.80
  6. Step 6: Final answer
    x = 14,054.16

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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.