Home / 21,311,359.54-29,409,998.61-12,143,806.90

Finding the Fourth Proportional to 21,311,359.54, 29,409,998.61 and 12,143,806.90

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Solution

The fourth proportional to 21,311,359.54, 29,409,998.61 and 12,143,806.90 is: 16,758,637.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311,359.54 : 29,409,998.61 = 12,143,806.90 : x
  2. Step 2: Convert to fraction form
    21,311,359.54/29,409,998.61 = 12,143,806.90/x
  3. Step 3: Cross multiply
    21,311,359.54x = 29,409,998.61 × 12,143,806.90
  4. Step 4: Simplify right side
    21,311,359.54x = 357,149,344,049,108.44
  5. Step 5: Solve for x
    x = 357,149,344,049,108.44/21,311,359.54
  6. Step 6: Final answer
    x = 16,758,637.26

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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.