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Finding the Fourth Proportional to 34,390.88, 47,451.12 and 21,811.04

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Solution

The fourth proportional to 34,390.88, 47,451.12 and 21,811.04 is: 30,093.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,390.88 : 47,451.12 = 21,811.04 : x
  2. Step 2: Convert to fraction form
    34,390.88/47,451.12 = 21,811.04/x
  3. Step 3: Cross multiply
    34,390.88x = 47,451.12 × 21,811.04
  4. Step 4: Simplify right side
    34,390.88x = 1,034,958,276.36
  5. Step 5: Solve for x
    x = 1,034,958,276.36/34,390.88
  6. Step 6: Final answer
    x = 30,093.97

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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.