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Finding the Fourth Proportional to 18,597.15, 25,664.18 and 10,639.71

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Solution

The fourth proportional to 18,597.15, 25,664.18 and 10,639.71 is: 14,682.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.15 : 25,664.18 = 10,639.71 : x
  2. Step 2: Convert to fraction form
    18,597.15/25,664.18 = 10,639.71/x
  3. Step 3: Cross multiply
    18,597.15x = 25,664.18 × 10,639.71
  4. Step 4: Simplify right side
    18,597.15x = 273,059,379.39
  5. Step 5: Solve for x
    x = 273,059,379.39/18,597.15
  6. Step 6: Final answer
    x = 14,682.86

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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.