Home / 13,458,697.20-20,188,045.80-6,638,537.70

Finding the Fourth Proportional to 13,458,697.20, 20,188,045.80 and 6,638,537.70

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Solution

The fourth proportional to 13,458,697.20, 20,188,045.80 and 6,638,537.70 is: 9,957,806.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458,697.20 : 20,188,045.80 = 6,638,537.70 : x
  2. Step 2: Convert to fraction form
    13,458,697.20/20,188,045.80 = 6,638,537.70/x
  3. Step 3: Cross multiply
    13,458,697.20x = 20,188,045.80 × 6,638,537.70
  4. Step 4: Simplify right side
    13,458,697.20x = 134,019,103,132,626.67
  5. Step 5: Solve for x
    x = 134,019,103,132,626.67/13,458,697.20
  6. Step 6: Final answer
    x = 9,957,806.55

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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.