Home / 13,664,538.70-20,496,808.05-8,638,132.30

Finding the Fourth Proportional to 13,664,538.70, 20,496,808.05 and 8,638,132.30

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Solution

The fourth proportional to 13,664,538.70, 20,496,808.05 and 8,638,132.30 is: 12,957,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664,538.70 : 20,496,808.05 = 8,638,132.30 : x
  2. Step 2: Convert to fraction form
    13,664,538.70/20,496,808.05 = 8,638,132.30/x
  3. Step 3: Cross multiply
    13,664,538.70x = 20,496,808.05 × 8,638,132.30
  4. Step 4: Simplify right side
    13,664,538.70x = 177,054,139,663,605.03
  5. Step 5: Solve for x
    x = 177,054,139,663,605.03/13,664,538.70
  6. Step 6: Final answer
    x = 12,957,198.45

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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.