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Finding the Fourth Proportional to 12,995,919.80, 19,495,722.90 and 4,019,535.80

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Solution

The fourth proportional to 12,995,919.80, 19,495,722.90 and 4,019,535.80 is: 6,029,873.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995,919.80 : 19,495,722.90 = 4,019,535.80 : x
  2. Step 2: Convert to fraction form
    12,995,919.80/19,495,722.90 = 4,019,535.80/x
  3. Step 3: Cross multiply
    12,995,919.80x = 19,495,722.90 × 4,019,535.80
  4. Step 4: Simplify right side
    12,995,919.80x = 78,363,756,143,429.81
  5. Step 5: Solve for x
    x = 78,363,756,143,429.81/12,995,919.80
  6. Step 6: Final answer
    x = 6,029,873.79

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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.