Home / 20,771,921.24-28,663,749.54-11,479,380.11

Finding the Fourth Proportional to 20,771,921.24, 28,663,749.54 and 11,479,380.11

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Solution

The fourth proportional to 20,771,921.24, 28,663,749.54 and 11,479,380.11 is: 15,840,714.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771,921.24 : 28,663,749.54 = 11,479,380.11 : x
  2. Step 2: Convert to fraction form
    20,771,921.24/28,663,749.54 = 11,479,380.11/x
  3. Step 3: Cross multiply
    20,771,921.24x = 28,663,749.54 × 11,479,380.11
  4. Step 4: Simplify right side
    20,771,921.24x = 329,042,076,204,178.88
  5. Step 5: Solve for x
    x = 329,042,076,204,178.88/20,771,921.24
  6. Step 6: Final answer
    x = 15,840,714.61

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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.