Home / 20,812,922.97-28,718,407.51-13,072,452

Finding the Fourth Proportional to 20,812,922.97, 28,718,407.51 and 13,072,452

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Solution

The fourth proportional to 20,812,922.97, 28,718,407.51 and 13,072,452 is: 18,037,831.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812,922.97 : 28,718,407.51 = 13,072,452 : x
  2. Step 2: Convert to fraction form
    20,812,922.97/28,718,407.51 = 13,072,452/x
  3. Step 3: Cross multiply
    20,812,922.97x = 28,718,407.51 × 13,072,452
  4. Step 4: Simplify right side
    20,812,922.97x = 375,420,003,690,914.56
  5. Step 5: Solve for x
    x = 375,420,003,690,914.56/20,812,922.97
  6. Step 6: Final answer
    x = 18,037,831.79

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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.