Home / 20,569,811.29-28,389,231.41-12,731,837.58

Finding the Fourth Proportional to 20,569,811.29, 28,389,231.41 and 12,731,837.58

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Solution

The fourth proportional to 20,569,811.29, 28,389,231.41 and 12,731,837.58 is: 17,571,725.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569,811.29 : 28,389,231.41 = 12,731,837.58 : x
  2. Step 2: Convert to fraction form
    20,569,811.29/28,389,231.41 = 12,731,837.58/x
  3. Step 3: Cross multiply
    20,569,811.29x = 28,389,231.41 × 12,731,837.58
  4. Step 4: Simplify right side
    20,569,811.29x = 361,447,083,269,495.19
  5. Step 5: Solve for x
    x = 361,447,083,269,495.19/20,569,811.29
  6. Step 6: Final answer
    x = 17,571,725.78

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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.