Home / 15,388,856,987.84-21,234,831,049.32-8,615,046,491.36

Finding the Fourth Proportional to 15,388,856,987.84, 21,234,831,049.32 and 8,615,046,491.36

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Solution

The fourth proportional to 15,388,856,987.84, 21,234,831,049.32 and 8,615,046,491.36 is: 11,887,761,181.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388,856,987.84 : 21,234,831,049.32 = 8,615,046,491.36 : x
  2. Step 2: Convert to fraction form
    15,388,856,987.84/21,234,831,049.32 = 8,615,046,491.36/x
  3. Step 3: Cross multiply
    15,388,856,987.84x = 21,234,831,049.32 × 8,615,046,491.36
  4. Step 4: Simplify right side
    15,388,856,987.84x = 182,939,056,726,066,659,328
  5. Step 5: Solve for x
    x = 182,939,056,726,066,659,328/15,388,856,987.84
  6. Step 6: Final answer
    x = 11,887,761,181.39

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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.