Home / 12,257,139.40-18,338,469.90-8,005,611.40

Finding the Fourth Proportional to 12,257,139.40, 18,338,469.90 and 8,005,611.40

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Solution

The fourth proportional to 12,257,139.40, 18,338,469.90 and 8,005,611.40 is: 11,977,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,257,139.40 : 18,338,469.90 = 8,005,611.40 : x
  2. Step 2: Convert to fraction form
    12,257,139.40/18,338,469.90 = 8,005,611.40/x
  3. Step 3: Cross multiply
    12,257,139.40x = 18,338,469.90 × 8,005,611.40
  4. Step 4: Simplify right side
    12,257,139.40x = 146,810,663,689,996.84
  5. Step 5: Solve for x
    x = 146,810,663,689,996.84/12,257,139.40
  6. Step 6: Final answer
    x = 11,977,563.35

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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.