Home / 20,503,491.40-30,734,241.90-11,979,440.20

Finding the Fourth Proportional to 20,503,491.40, 30,734,241.90 and 11,979,440.20

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Solution

The fourth proportional to 20,503,491.40, 30,734,241.90 and 11,979,440.20 is: 17,956,893.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503,491.40 : 30,734,241.90 = 11,979,440.20 : x
  2. Step 2: Convert to fraction form
    20,503,491.40/30,734,241.90 = 11,979,440.20/x
  3. Step 3: Cross multiply
    20,503,491.40x = 30,734,241.90 × 11,979,440.20
  4. Step 4: Simplify right side
    20,503,491.40x = 368,179,012,933,384.31
  5. Step 5: Solve for x
    x = 368,179,012,933,384.31/20,503,491.40
  6. Step 6: Final answer
    x = 17,956,893.57

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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.