Home / 12,043,431.40-16,620,807.78-7,961,972.20

Finding the Fourth Proportional to 12,043,431.40, 16,620,807.78 and 7,961,972.20

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Solution

The fourth proportional to 12,043,431.40, 16,620,807.78 and 7,961,972.20 is: 10,988,098.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,043,431.40 : 16,620,807.78 = 7,961,972.20 : x
  2. Step 2: Convert to fraction form
    12,043,431.40/16,620,807.78 = 7,961,972.20/x
  3. Step 3: Cross multiply
    12,043,431.40x = 16,620,807.78 × 7,961,972.20
  4. Step 4: Simplify right side
    12,043,431.40x = 132,334,409,485,903.72
  5. Step 5: Solve for x
    x = 132,334,409,485,903.72/12,043,431.40
  6. Step 6: Final answer
    x = 10,988,098.42

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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.