Home / 15,786,876.87-21,785,890.23-8,543,532.87

Finding the Fourth Proportional to 15,786,876.87, 21,785,890.23 and 8,543,532.87

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Solution

The fourth proportional to 15,786,876.87, 21,785,890.23 and 8,543,532.87 is: 11,790,075.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786,876.87 : 21,785,890.23 = 8,543,532.87 : x
  2. Step 2: Convert to fraction form
    15,786,876.87/21,785,890.23 = 8,543,532.87/x
  3. Step 3: Cross multiply
    15,786,876.87x = 21,785,890.23 × 8,543,532.87
  4. Step 4: Simplify right side
    15,786,876.87x = 186,128,469,282,216.84
  5. Step 5: Solve for x
    x = 186,128,469,282,216.84/15,786,876.87
  6. Step 6: Final answer
    x = 11,790,075.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.