Home / 21,291,388.20-29,382,086.52-12,124,030.68

Finding the Fourth Proportional to 21,291,388.20, 29,382,086.52 and 12,124,030.68

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Solution

The fourth proportional to 21,291,388.20, 29,382,086.52 and 12,124,030.68 is: 16,731,145.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291,388.20 : 29,382,086.52 = 12,124,030.68 : x
  2. Step 2: Convert to fraction form
    21,291,388.20/29,382,086.52 = 12,124,030.68/x
  3. Step 3: Cross multiply
    21,291,388.20x = 29,382,086.52 × 12,124,030.68
  4. Step 4: Simplify right side
    21,291,388.20x = 356,229,318,410,894.44
  5. Step 5: Solve for x
    x = 356,229,318,410,894.44/21,291,388.20
  6. Step 6: Final answer
    x = 16,731,145.71

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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.