Home / 18,947,644.60-28,415,246.10-6,978,825.40

Finding the Fourth Proportional to 18,947,644.60, 28,415,246.10 and 6,978,825.40

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Solution

The fourth proportional to 18,947,644.60, 28,415,246.10 and 6,978,825.40 is: 10,465,946.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947,644.60 : 28,415,246.10 = 6,978,825.40 : x
  2. Step 2: Convert to fraction form
    18,947,644.60/28,415,246.10 = 6,978,825.40/x
  3. Step 3: Cross multiply
    18,947,644.60x = 28,415,246.10 × 6,978,825.40
  4. Step 4: Simplify right side
    18,947,644.60x = 198,305,041,229,930.97
  5. Step 5: Solve for x
    x = 198,305,041,229,930.97/18,947,644.60
  6. Step 6: Final answer
    x = 10,465,946.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.