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Finding the Fourth Proportional to 18,652.69, 25,740.81 and 10,154.86

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Solution

The fourth proportional to 18,652.69, 25,740.81 and 10,154.86 is: 14,013.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.69 : 25,740.81 = 10,154.86 : x
  2. Step 2: Convert to fraction form
    18,652.69/25,740.81 = 10,154.86/x
  3. Step 3: Cross multiply
    18,652.69x = 25,740.81 × 10,154.86
  4. Step 4: Simplify right side
    18,652.69x = 261,394,321.84
  5. Step 5: Solve for x
    x = 261,394,321.84/18,652.69
  6. Step 6: Final answer
    x = 14,013.76

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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.