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Finding the Fourth Proportional to 25,890.62, 35,714.49 and 15,539.72

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Solution

The fourth proportional to 25,890.62, 35,714.49 and 15,539.72 is: 21,436.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,890.62 : 35,714.49 = 15,539.72 : x
  2. Step 2: Convert to fraction form
    25,890.62/35,714.49 = 15,539.72/x
  3. Step 3: Cross multiply
    25,890.62x = 35,714.49 × 15,539.72
  4. Step 4: Simplify right side
    25,890.62x = 554,993,174.54
  5. Step 5: Solve for x
    x = 554,993,174.54/25,890.62
  6. Step 6: Final answer
    x = 21,436.07

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1.5x scale

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.