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Finding the Fourth Proportional to 31,994.10, 47,992.41 and 8,621.13

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Solution

The fourth proportional to 31,994.10, 47,992.41 and 8,621.13 is: 12,932.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,994.10 : 47,992.41 = 8,621.13 : x
  2. Step 2: Convert to fraction form
    31,994.10/47,992.41 = 8,621.13/x
  3. Step 3: Cross multiply
    31,994.10x = 47,992.41 × 8,621.13
  4. Step 4: Simplify right side
    31,994.10x = 413,748,805.62
  5. Step 5: Solve for x
    x = 413,748,805.62/31,994.10
  6. Step 6: Final answer
    x = 12,932.03

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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.