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Finding the Fourth Proportional to 25,893.66, 35,731.86 and 15,279.42

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Solution

The fourth proportional to 25,893.66, 35,731.86 and 15,279.42 is: 21,084.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,893.66 : 35,731.86 = 15,279.42 : x
  2. Step 2: Convert to fraction form
    25,893.66/35,731.86 = 15,279.42/x
  3. Step 3: Cross multiply
    25,893.66x = 35,731.86 × 15,279.42
  4. Step 4: Simplify right side
    25,893.66x = 545,962,096.32
  5. Step 5: Solve for x
    x = 545,962,096.32/25,893.66
  6. Step 6: Final answer
    x = 21,084.78

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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.