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Finding the Fourth Proportional to 18,812.60, 25,961.01 and 10,854.62

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Solution

The fourth proportional to 18,812.60, 25,961.01 and 10,854.62 is: 14,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,812.60 : 25,961.01 = 10,854.62 : x
  2. Step 2: Convert to fraction form
    18,812.60/25,961.01 = 10,854.62/x
  3. Step 3: Cross multiply
    18,812.60x = 25,961.01 × 10,854.62
  4. Step 4: Simplify right side
    18,812.60x = 281,796,898.37
  5. Step 5: Solve for x
    x = 281,796,898.37/18,812.60
  6. Step 6: Final answer
    x = 14,979.16

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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.