Home / 21,720,738.96-29,972,871.72-12,553,975.44

Finding the Fourth Proportional to 21,720,738.96, 29,972,871.72 and 12,553,975.44

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Solution

The fourth proportional to 21,720,738.96, 29,972,871.72 and 12,553,975.44 is: 17,323,475.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720,738.96 : 29,972,871.72 = 12,553,975.44 : x
  2. Step 2: Convert to fraction form
    21,720,738.96/29,972,871.72 = 12,553,975.44/x
  3. Step 3: Cross multiply
    21,720,738.96x = 29,972,871.72 × 12,553,975.44
  4. Step 4: Simplify right side
    21,720,738.96x = 376,278,695,439,150.50
  5. Step 5: Solve for x
    x = 376,278,695,439,150.50/21,720,738.96
  6. Step 6: Final answer
    x = 17,323,475.79

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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.