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Finding the Fourth Proportional to 15,591.88, 23,387.90 and 3,905.08

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Solution

The fourth proportional to 15,591.88, 23,387.90 and 3,905.08 is: 5,857.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.88 : 23,387.90 = 3,905.08 : x
  2. Step 2: Convert to fraction form
    15,591.88/23,387.90 = 3,905.08/x
  3. Step 3: Cross multiply
    15,591.88x = 23,387.90 × 3,905.08
  4. Step 4: Simplify right side
    15,591.88x = 91,331,620.53
  5. Step 5: Solve for x
    x = 91,331,620.53/15,591.88
  6. Step 6: Final answer
    x = 5,857.64

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1.5x scale

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.