Home / 20,822,280.05-28,789,598.07-18,236,548.95

Finding the Fourth Proportional to 20,822,280.05, 28,789,598.07 and 18,236,548.95

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Solution

The fourth proportional to 20,822,280.05, 28,789,598.07 and 18,236,548.95 is: 25,214,477.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,822,280.05 : 28,789,598.07 = 18,236,548.95 : x
  2. Step 2: Convert to fraction form
    20,822,280.05/28,789,598.07 = 18,236,548.95/x
  3. Step 3: Cross multiply
    20,822,280.05x = 28,789,598.07 × 18,236,548.95
  4. Step 4: Simplify right side
    20,822,280.05x = 525,022,914,454,380.50
  5. Step 5: Solve for x
    x = 525,022,914,454,380.50/20,822,280.05
  6. Step 6: Final answer
    x = 25,214,477.63

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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.