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Finding the Fourth Proportional to 25,228, 34,756.68 and 19,920.88

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Solution

The fourth proportional to 25,228, 34,756.68 and 19,920.88 is: 27,445.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,228 : 34,756.68 = 19,920.88 : x
  2. Step 2: Convert to fraction form
    25,228/34,756.68 = 19,920.88/x
  3. Step 3: Cross multiply
    25,228x = 34,756.68 × 19,920.88
  4. Step 4: Simplify right side
    25,228x = 692,383,651.48
  5. Step 5: Solve for x
    x = 692,383,651.48/25,228
  6. Step 6: Final answer
    x = 27,445.05

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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.