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Finding the Fourth Proportional to 15,855,150, 21,880,128.87 and 8,611,806

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Solution

The fourth proportional to 15,855,150, 21,880,128.87 and 8,611,806 is: 11,884,304.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,855,150 : 21,880,128.87 = 8,611,806 : x
  2. Step 2: Convert to fraction form
    15,855,150/21,880,128.87 = 8,611,806/x
  3. Step 3: Cross multiply
    15,855,150x = 21,880,128.87 × 8,611,806
  4. Step 4: Simplify right side
    15,855,150x = 188,427,425,083,439.22
  5. Step 5: Solve for x
    x = 188,427,425,083,439.22/15,855,150
  6. Step 6: Final answer
    x = 11,884,304.16

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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.