Home / 15,078,929.70-20,809,013.49-8,203,460.97

Finding the Fourth Proportional to 15,078,929.70, 20,809,013.49 and 8,203,460.97

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Solution

The fourth proportional to 15,078,929.70, 20,809,013.49 and 8,203,460.97 is: 11,320,825.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,078,929.70 : 20,809,013.49 = 8,203,460.97 : x
  2. Step 2: Convert to fraction form
    15,078,929.70/20,809,013.49 = 8,203,460.97/x
  3. Step 3: Cross multiply
    15,078,929.70x = 20,809,013.49 × 8,203,460.97
  4. Step 4: Simplify right side
    15,078,929.70x = 170,705,929,989,418.47
  5. Step 5: Solve for x
    x = 170,705,929,989,418.47/15,078,929.70
  6. Step 6: Final answer
    x = 11,320,825.38

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1.5x scale

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.