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Finding the Fourth Proportional to 15,462,992.22, 21,349,604.61 and 9,664,380.42

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Solution

The fourth proportional to 15,462,992.22, 21,349,604.61 and 9,664,380.42 is: 13,343,517.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,462,992.22 : 21,349,604.61 = 9,664,380.42 : x
  2. Step 2: Convert to fraction form
    15,462,992.22/21,349,604.61 = 9,664,380.42/x
  3. Step 3: Cross multiply
    15,462,992.22x = 21,349,604.61 × 9,664,380.42
  4. Step 4: Simplify right side
    15,462,992.22x = 206,330,700,767,625.72
  5. Step 5: Solve for x
    x = 206,330,700,767,625.72/15,462,992.22
  6. Step 6: Final answer
    x = 13,343,517.08

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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.