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Finding the Fourth Proportional to 25,978.08, 39,001.68 and 13,674.72

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Solution

The fourth proportional to 25,978.08, 39,001.68 and 13,674.72 is: 20,530.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,978.08 : 39,001.68 = 13,674.72 : x
  2. Step 2: Convert to fraction form
    25,978.08/39,001.68 = 13,674.72/x
  3. Step 3: Cross multiply
    25,978.08x = 39,001.68 × 13,674.72
  4. Step 4: Simplify right side
    25,978.08x = 533,337,053.53
  5. Step 5: Solve for x
    x = 533,337,053.53/25,978.08
  6. Step 6: Final answer
    x = 20,530.27

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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.