Home / 12,921,043.45-17,831,420.31-7,120,198.86

Finding the Fourth Proportional to 12,921,043.45, 17,831,420.31 and 7,120,198.86

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Solution

The fourth proportional to 12,921,043.45, 17,831,420.31 and 7,120,198.86 is: 9,826,084.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,043.45 : 17,831,420.31 = 7,120,198.86 : x
  2. Step 2: Convert to fraction form
    12,921,043.45/17,831,420.31 = 7,120,198.86/x
  3. Step 3: Cross multiply
    12,921,043.45x = 17,831,420.31 × 7,120,198.86
  4. Step 4: Simplify right side
    12,921,043.45x = 126,963,258,483,224.66
  5. Step 5: Solve for x
    x = 126,963,258,483,224.66/12,921,043.45
  6. Step 6: Final answer
    x = 9,826,084.02

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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.