Home / 28,040,731.20-42,072,906.60-15,270,400.80

Finding the Fourth Proportional to 28,040,731.20, 42,072,906.60 and 15,270,400.80

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Solution

The fourth proportional to 28,040,731.20, 42,072,906.60 and 15,270,400.80 is: 22,912,032.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040,731.20 : 42,072,906.60 = 15,270,400.80 : x
  2. Step 2: Convert to fraction form
    28,040,731.20/42,072,906.60 = 15,270,400.80/x
  3. Step 3: Cross multiply
    28,040,731.20x = 42,072,906.60 × 15,270,400.80
  4. Step 4: Simplify right side
    28,040,731.20x = 642,470,146,602,965.38
  5. Step 5: Solve for x
    x = 642,470,146,602,965.38/28,040,731.20
  6. Step 6: Final answer
    x = 22,912,032.57

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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.