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Finding the Fourth Proportional to 18,759, 25,890.12 and 10,800.48

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Solution

The fourth proportional to 18,759, 25,890.12 and 10,800.48 is: 14,906.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759 : 25,890.12 = 10,800.48 : x
  2. Step 2: Convert to fraction form
    18,759/25,890.12 = 10,800.48/x
  3. Step 3: Cross multiply
    18,759x = 25,890.12 × 10,800.48
  4. Step 4: Simplify right side
    18,759x = 279,625,723.26
  5. Step 5: Solve for x
    x = 279,625,723.26/18,759
  6. Step 6: Final answer
    x = 14,906.22

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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.