Home / 20,878,124.70-28,811,753.11-11,587,097.46

Finding the Fourth Proportional to 20,878,124.70, 28,811,753.11 and 11,587,097.46

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Solution

The fourth proportional to 20,878,124.70, 28,811,753.11 and 11,587,097.46 is: 15,990,161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,878,124.70 : 28,811,753.11 = 11,587,097.46 : x
  2. Step 2: Convert to fraction form
    20,878,124.70/28,811,753.11 = 11,587,097.46/x
  3. Step 3: Cross multiply
    20,878,124.70x = 28,811,753.11 × 11,587,097.46
  4. Step 4: Simplify right side
    20,878,124.70x = 333,844,591,106,001.62
  5. Step 5: Solve for x
    x = 333,844,591,106,001.62/20,878,124.70
  6. Step 6: Final answer
    x = 15,990,161.76

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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.