Home / 12,921,042.46-17,831,418.95-7,120,197.87

Finding the Fourth Proportional to 12,921,042.46, 17,831,418.95 and 7,120,197.87

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Solution

The fourth proportional to 12,921,042.46, 17,831,418.95 and 7,120,197.87 is: 9,826,082.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,042.46 : 17,831,418.95 = 7,120,197.87 : x
  2. Step 2: Convert to fraction form
    12,921,042.46/17,831,418.95 = 7,120,197.87/x
  3. Step 3: Cross multiply
    12,921,042.46x = 17,831,418.95 × 7,120,197.87
  4. Step 4: Simplify right side
    12,921,042.46x = 126,963,231,258,072.94
  5. Step 5: Solve for x
    x = 126,963,231,258,072.94/12,921,042.46
  6. Step 6: Final answer
    x = 9,826,082.66

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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.