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Finding the Fourth Proportional to 29,976.60, 44,964.90 and 21,221.40

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Solution

The fourth proportional to 29,976.60, 44,964.90 and 21,221.40 is: 31,832.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,976.60 : 44,964.90 = 21,221.40 : x
  2. Step 2: Convert to fraction form
    29,976.60/44,964.90 = 21,221.40/x
  3. Step 3: Cross multiply
    29,976.60x = 44,964.90 × 21,221.40
  4. Step 4: Simplify right side
    29,976.60x = 954,218,128.86
  5. Step 5: Solve for x
    x = 954,218,128.86/29,976.60
  6. Step 6: Final answer
    x = 31,832.10

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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.