Home / 12,780,917.40-19,180,897.68-9,377,997.40

Finding the Fourth Proportional to 12,780,917.40, 19,180,897.68 and 9,377,997.40

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Solution

The fourth proportional to 12,780,917.40, 19,180,897.68 and 9,377,997.40 is: 14,073,982.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,917.40 : 19,180,897.68 = 9,377,997.40 : x
  2. Step 2: Convert to fraction form
    12,780,917.40/19,180,897.68 = 9,377,997.40/x
  3. Step 3: Cross multiply
    12,780,917.40x = 19,180,897.68 × 9,377,997.40
  4. Step 4: Simplify right side
    12,780,917.40x = 179,878,408,572,706.03
  5. Step 5: Solve for x
    x = 179,878,408,572,706.03/12,780,917.40
  6. Step 6: Final answer
    x = 14,073,982.56

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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.