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Finding the Fourth Proportional to 31,504.62, 47,310.86 and 21,041.88

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Solution

The fourth proportional to 31,504.62, 47,310.86 and 21,041.88 is: 31,598.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,504.62 : 47,310.86 = 21,041.88 : x
  2. Step 2: Convert to fraction form
    31,504.62/47,310.86 = 21,041.88/x
  3. Step 3: Cross multiply
    31,504.62x = 47,310.86 × 21,041.88
  4. Step 4: Simplify right side
    31,504.62x = 995,509,438.82
  5. Step 5: Solve for x
    x = 995,509,438.82/31,504.62
  6. Step 6: Final answer
    x = 31,598.84

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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.