Home / 12,143,199.82-18,212,117.40-3,505,423

Finding the Fourth Proportional to 12,143,199.82, 18,212,117.40 and 3,505,423

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Solution

The fourth proportional to 12,143,199.82, 18,212,117.40 and 3,505,423 is: 5,257,360.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143,199.82 : 18,212,117.40 = 3,505,423 : x
  2. Step 2: Convert to fraction form
    12,143,199.82/18,212,117.40 = 3,505,423/x
  3. Step 3: Cross multiply
    12,143,199.82x = 18,212,117.40 × 3,505,423
  4. Step 4: Simplify right side
    12,143,199.82x = 63,841,175,212,660.20
  5. Step 5: Solve for x
    x = 63,841,175,212,660.20/12,143,199.82
  6. Step 6: Final answer
    x = 5,257,360.18

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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.