Home / 13,821,716.80-20,748,321.60-8,145,139.60

Finding the Fourth Proportional to 13,821,716.80, 20,748,321.60 and 8,145,139.60

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Solution

The fourth proportional to 13,821,716.80, 20,748,321.60 and 8,145,139.60 is: 12,226,988.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821,716.80 : 20,748,321.60 = 8,145,139.60 : x
  2. Step 2: Convert to fraction form
    13,821,716.80/20,748,321.60 = 8,145,139.60/x
  3. Step 3: Cross multiply
    13,821,716.80x = 20,748,321.60 × 8,145,139.60
  4. Step 4: Simplify right side
    13,821,716.80x = 168,997,975,897,695.38
  5. Step 5: Solve for x
    x = 168,997,975,897,695.38/13,821,716.80
  6. Step 6: Final answer
    x = 12,226,988.76

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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.