Home / 20,539,734.72-28,345,719.60-11,372,377.44

Finding the Fourth Proportional to 20,539,734.72, 28,345,719.60 and 11,372,377.44

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Solution

The fourth proportional to 20,539,734.72, 28,345,719.60 and 11,372,377.44 is: 15,694,371.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539,734.72 : 28,345,719.60 = 11,372,377.44 : x
  2. Step 2: Convert to fraction form
    20,539,734.72/28,345,719.60 = 11,372,377.44/x
  3. Step 3: Cross multiply
    20,539,734.72x = 28,345,719.60 × 11,372,377.44
  4. Step 4: Simplify right side
    20,539,734.72x = 322,358,222,099,605.81
  5. Step 5: Solve for x
    x = 322,358,222,099,605.81/20,539,734.72
  6. Step 6: Final answer
    x = 15,694,371.25

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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.