Home / 10,780,820.40-16,171,230.60-10,639,102.80

Finding the Fourth Proportional to 10,780,820.40, 16,171,230.60 and 10,639,102.80

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Solution

The fourth proportional to 10,780,820.40, 16,171,230.60 and 10,639,102.80 is: 15,958,654.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,780,820.40 : 16,171,230.60 = 10,639,102.80 : x
  2. Step 2: Convert to fraction form
    10,780,820.40/16,171,230.60 = 10,639,102.80/x
  3. Step 3: Cross multiply
    10,780,820.40x = 16,171,230.60 × 10,639,102.80
  4. Step 4: Simplify right side
    10,780,820.40x = 172,047,384,755,905.69
  5. Step 5: Solve for x
    x = 172,047,384,755,905.69/10,780,820.40
  6. Step 6: Final answer
    x = 15,958,654.20

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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.