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Finding the Fourth Proportional to 18,818.92, 25,971.06 and 10,863.64

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Solution

The fourth proportional to 18,818.92, 25,971.06 and 10,863.64 is: 14,992.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.92 : 25,971.06 = 10,863.64 : x
  2. Step 2: Convert to fraction form
    18,818.92/25,971.06 = 10,863.64/x
  3. Step 3: Cross multiply
    18,818.92x = 25,971.06 × 10,863.64
  4. Step 4: Simplify right side
    18,818.92x = 282,140,246.26
  5. Step 5: Solve for x
    x = 282,140,246.26/18,818.92
  6. Step 6: Final answer
    x = 14,992.37

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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.