Home / 15,880,905,756.15-21,916,042,943.48-8,647,349,789.12

Finding the Fourth Proportional to 15,880,905,756.15, 21,916,042,943.48 and 8,647,349,789.12

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Solution

The fourth proportional to 15,880,905,756.15, 21,916,042,943.48 and 8,647,349,789.12 is: 11,933,556,702.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880,905,756.15 : 21,916,042,943.48 = 8,647,349,789.12 : x
  2. Step 2: Convert to fraction form
    15,880,905,756.15/21,916,042,943.48 = 8,647,349,789.12/x
  3. Step 3: Cross multiply
    15,880,905,756.15x = 21,916,042,943.48 × 8,647,349,789.12
  4. Step 4: Simplify right side
    15,880,905,756.15x = 189,515,689,325,493,813,248
  5. Step 5: Solve for x
    x = 189,515,689,325,493,813,248/15,880,905,756.15
  6. Step 6: Final answer
    x = 11,933,556,702.34

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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.