Home / 20,889,072.90-28,826,244.09-11,721,868.74

Finding the Fourth Proportional to 20,889,072.90, 28,826,244.09 and 11,721,868.74

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Solution

The fourth proportional to 20,889,072.90, 28,826,244.09 and 11,721,868.74 is: 16,175,799.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889,072.90 : 28,826,244.09 = 11,721,868.74 : x
  2. Step 2: Convert to fraction form
    20,889,072.90/28,826,244.09 = 11,721,868.74/x
  3. Step 3: Cross multiply
    20,889,072.90x = 28,826,244.09 × 11,721,868.74
  4. Step 4: Simplify right side
    20,889,072.90x = 337,897,449,490,180.75
  5. Step 5: Solve for x
    x = 337,897,449,490,180.75/20,889,072.90
  6. Step 6: Final answer
    x = 16,175,799.24

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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.