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Finding the Fourth Proportional to 18,807.34, 25,960.87 and 12,834.74

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Solution

The fourth proportional to 18,807.34, 25,960.87 and 12,834.74 is: 17,716.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.34 : 25,960.87 = 12,834.74 : x
  2. Step 2: Convert to fraction form
    18,807.34/25,960.87 = 12,834.74/x
  3. Step 3: Cross multiply
    18,807.34x = 25,960.87 × 12,834.74
  4. Step 4: Simplify right side
    18,807.34x = 333,201,016.62
  5. Step 5: Solve for x
    x = 333,201,016.62/18,807.34
  6. Step 6: Final answer
    x = 17,716.54

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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.