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Finding the Fourth Proportional to 31,994.01, 47,987.78 and 8,622.81

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Solution

The fourth proportional to 31,994.01, 47,987.78 and 8,622.81 is: 12,933.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,994.01 : 47,987.78 = 8,622.81 : x
  2. Step 2: Convert to fraction form
    31,994.01/47,987.78 = 8,622.81/x
  3. Step 3: Cross multiply
    31,994.01x = 47,987.78 × 8,622.81
  4. Step 4: Simplify right side
    31,994.01x = 413,789,466.15
  5. Step 5: Solve for x
    x = 413,789,466.15/31,994.01
  6. Step 6: Final answer
    x = 12,933.34

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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.