Home / 21,022,143.30-29,005,067.66-12,315,635.55

Finding the Fourth Proportional to 21,022,143.30, 29,005,067.66 and 12,315,635.55

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Solution

The fourth proportional to 21,022,143.30, 29,005,067.66 and 12,315,635.55 is: 16,992,360.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,022,143.30 : 29,005,067.66 = 12,315,635.55 : x
  2. Step 2: Convert to fraction form
    21,022,143.30/29,005,067.66 = 12,315,635.55/x
  3. Step 3: Cross multiply
    21,022,143.30x = 29,005,067.66 × 12,315,635.55
  4. Step 4: Simplify right side
    21,022,143.30x = 357,215,842,342,073.19
  5. Step 5: Solve for x
    x = 357,215,842,342,073.19/21,022,143.30
  6. Step 6: Final answer
    x = 16,992,360.73

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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.