Home / 18,718,843.22-28,206,034.66-15,381,881.56

Finding the Fourth Proportional to 18,718,843.22, 28,206,034.66 and 15,381,881.56

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Solution

The fourth proportional to 18,718,843.22, 28,206,034.66 and 15,381,881.56 is: 23,177,814.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718,843.22 : 28,206,034.66 = 15,381,881.56 : x
  2. Step 2: Convert to fraction form
    18,718,843.22/28,206,034.66 = 15,381,881.56/x
  3. Step 3: Cross multiply
    18,718,843.22x = 28,206,034.66 × 15,381,881.56
  4. Step 4: Simplify right side
    18,718,843.22x = 433,861,884,417,374.88
  5. Step 5: Solve for x
    x = 433,861,884,417,374.88/18,718,843.22
  6. Step 6: Final answer
    x = 23,177,814.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.