Home / 12,981,203.57-19,438,845.72-7,790,545.76

Finding the Fourth Proportional to 12,981,203.57, 19,438,845.72 and 7,790,545.76

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Solution

The fourth proportional to 12,981,203.57, 19,438,845.72 and 7,790,545.76 is: 11,666,038.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,981,203.57 : 19,438,845.72 = 7,790,545.76 : x
  2. Step 2: Convert to fraction form
    12,981,203.57/19,438,845.72 = 7,790,545.76/x
  3. Step 3: Cross multiply
    12,981,203.57x = 19,438,845.72 × 7,790,545.76
  4. Step 4: Simplify right side
    12,981,203.57x = 151,439,217,122,716.50
  5. Step 5: Solve for x
    x = 151,439,217,122,716.50/12,981,203.57
  6. Step 6: Final answer
    x = 11,666,038.23

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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.