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Finding the Fourth Proportional to 25,402.88, 35,025 and 18,668

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Solution

The fourth proportional to 25,402.88, 35,025 and 18,668 is: 25,739.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,402.88 : 35,025 = 18,668 : x
  2. Step 2: Convert to fraction form
    25,402.88/35,025 = 18,668/x
  3. Step 3: Cross multiply
    25,402.88x = 35,025 × 18,668
  4. Step 4: Simplify right side
    25,402.88x = 653,846,700
  5. Step 5: Solve for x
    x = 653,846,700/25,402.88
  6. Step 6: Final answer
    x = 25,739.08

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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.