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Finding the Fourth Proportional to 18,759.67, 25,887.50 and 10,800.21

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Solution

The fourth proportional to 18,759.67, 25,887.50 and 10,800.21 is: 14,903.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,759.67 : 25,887.50 = 10,800.21 : x
  2. Step 2: Convert to fraction form
    18,759.67/25,887.50 = 10,800.21/x
  3. Step 3: Cross multiply
    18,759.67x = 25,887.50 × 10,800.21
  4. Step 4: Simplify right side
    18,759.67x = 279,590,436.38
  5. Step 5: Solve for x
    x = 279,590,436.38/18,759.67
  6. Step 6: Final answer
    x = 14,903.80

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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.