Home / 12,921,906.40-17,831,012.16-7,622,774.56

Finding the Fourth Proportional to 12,921,906.40, 17,831,012.16 and 7,622,774.56

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Solution

The fourth proportional to 12,921,906.40, 17,831,012.16 and 7,622,774.56 is: 10,518,709.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921,906.40 : 17,831,012.16 = 7,622,774.56 : x
  2. Step 2: Convert to fraction form
    12,921,906.40/17,831,012.16 = 7,622,774.56/x
  3. Step 3: Cross multiply
    12,921,906.40x = 17,831,012.16 × 7,622,774.56
  4. Step 4: Simplify right side
    12,921,906.40x = 135,921,785,872,298.64
  5. Step 5: Solve for x
    x = 135,921,785,872,298.64/12,921,906.40
  6. Step 6: Final answer
    x = 10,518,709.98

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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.