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Finding the Fourth Proportional to 25,991.91, 35,868.86 and 15,234.64

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Solution

The fourth proportional to 25,991.91, 35,868.86 and 15,234.64 is: 21,023.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,991.91 : 35,868.86 = 15,234.64 : x
  2. Step 2: Convert to fraction form
    25,991.91/35,868.86 = 15,234.64/x
  3. Step 3: Cross multiply
    25,991.91x = 35,868.86 × 15,234.64
  4. Step 4: Simplify right side
    25,991.91x = 546,449,169.31
  5. Step 5: Solve for x
    x = 546,449,169.31/25,991.91
  6. Step 6: Final answer
    x = 21,023.82

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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.