Home / 13,718,739.68-18,930,496.72-7,919,389.76

Finding the Fourth Proportional to 13,718,739.68, 18,930,496.72 and 7,919,389.76

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Solution

The fourth proportional to 13,718,739.68, 18,930,496.72 and 7,919,389.76 is: 10,927,970.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718,739.68 : 18,930,496.72 = 7,919,389.76 : x
  2. Step 2: Convert to fraction form
    13,718,739.68/18,930,496.72 = 7,919,389.76/x
  3. Step 3: Cross multiply
    13,718,739.68x = 18,930,496.72 × 7,919,389.76
  4. Step 4: Simplify right side
    13,718,739.68x = 149,917,981,876,081.56
  5. Step 5: Solve for x
    x = 149,917,981,876,081.56/13,718,739.68
  6. Step 6: Final answer
    x = 10,927,970.45

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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.