Home / 20,915,265.78-28,863,766.89-11,623,227.54

Finding the Fourth Proportional to 20,915,265.78, 28,863,766.89 and 11,623,227.54

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Solution

The fourth proportional to 20,915,265.78, 28,863,766.89 and 11,623,227.54 is: 16,040,443.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915,265.78 : 28,863,766.89 = 11,623,227.54 : x
  2. Step 2: Convert to fraction form
    20,915,265.78/28,863,766.89 = 11,623,227.54/x
  3. Step 3: Cross multiply
    20,915,265.78x = 28,863,766.89 × 11,623,227.54
  4. Step 4: Simplify right side
    20,915,265.78x = 335,490,130,223,988.12
  5. Step 5: Solve for x
    x = 335,490,130,223,988.12/20,915,265.78
  6. Step 6: Final answer
    x = 16,040,443.08

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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.