Home / 12,217,318.40-18,310,231.20-7,419,915.20

Finding the Fourth Proportional to 12,217,318.40, 18,310,231.20 and 7,419,915.20

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Solution

The fourth proportional to 12,217,318.40, 18,310,231.20 and 7,419,915.20 is: 11,120,309.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217,318.40 : 18,310,231.20 = 7,419,915.20 : x
  2. Step 2: Convert to fraction form
    12,217,318.40/18,310,231.20 = 7,419,915.20/x
  3. Step 3: Cross multiply
    12,217,318.40x = 18,310,231.20 × 7,419,915.20
  4. Step 4: Simplify right side
    12,217,318.40x = 135,860,362,796,394.23
  5. Step 5: Solve for x
    x = 135,860,362,796,394.23/12,217,318.40
  6. Step 6: Final answer
    x = 11,120,309.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.