Home / 18,889,910.40-28,334,865.60-6,921,091.20

Finding the Fourth Proportional to 18,889,910.40, 28,334,865.60 and 6,921,091.20

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Solution

The fourth proportional to 18,889,910.40, 28,334,865.60 and 6,921,091.20 is: 10,381,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889,910.40 : 28,334,865.60 = 6,921,091.20 : x
  2. Step 2: Convert to fraction form
    18,889,910.40/28,334,865.60 = 6,921,091.20/x
  3. Step 3: Cross multiply
    18,889,910.40x = 28,334,865.60 × 6,921,091.20
  4. Step 4: Simplify right side
    18,889,910.40x = 196,108,188,957,342.75
  5. Step 5: Solve for x
    x = 196,108,188,957,342.75/18,889,910.40
  6. Step 6: Final answer
    x = 10,381,636.80

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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.