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Finding the Fourth Proportional to 25,920.28, 38,850.07 and 9,899.31

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Solution

The fourth proportional to 25,920.28, 38,850.07 and 9,899.31 is: 14,837.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,920.28 : 38,850.07 = 9,899.31 : x
  2. Step 2: Convert to fraction form
    25,920.28/38,850.07 = 9,899.31/x
  3. Step 3: Cross multiply
    25,920.28x = 38,850.07 × 9,899.31
  4. Step 4: Simplify right side
    25,920.28x = 384,589,025.95
  5. Step 5: Solve for x
    x = 384,589,025.95/25,920.28
  6. Step 6: Final answer
    x = 14,837.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.