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Finding the Fourth Proportional to 25,689.96, 38,474.19 and 21,899.16

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Solution

The fourth proportional to 25,689.96, 38,474.19 and 21,899.16 is: 32,796.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,689.96 : 38,474.19 = 21,899.16 : x
  2. Step 2: Convert to fraction form
    25,689.96/38,474.19 = 21,899.16/x
  3. Step 3: Cross multiply
    25,689.96x = 38,474.19 × 21,899.16
  4. Step 4: Simplify right side
    25,689.96x = 842,552,442.68
  5. Step 5: Solve for x
    x = 842,552,442.68/25,689.96
  6. Step 6: Final answer
    x = 32,796.95

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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.