Home / 13,542,620.76-20,319,629.52-8,429,327.28

Finding the Fourth Proportional to 13,542,620.76, 20,319,629.52 and 8,429,327.28

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Solution

The fourth proportional to 13,542,620.76, 20,319,629.52 and 8,429,327.28 is: 12,647,537.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542,620.76 : 20,319,629.52 = 8,429,327.28 : x
  2. Step 2: Convert to fraction form
    13,542,620.76/20,319,629.52 = 8,429,327.28/x
  3. Step 3: Cross multiply
    13,542,620.76x = 20,319,629.52 × 8,429,327.28
  4. Step 4: Simplify right side
    13,542,620.76x = 171,280,807,432,429.28
  5. Step 5: Solve for x
    x = 171,280,807,432,429.28/13,542,620.76
  6. Step 6: Final answer
    x = 12,647,537.76

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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.