Home / 23,131,416.78-31,920,552.09-12,819,099.42

Finding the Fourth Proportional to 23,131,416.78, 31,920,552.09 and 12,819,099.42

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Solution

The fourth proportional to 23,131,416.78, 31,920,552.09 and 12,819,099.42 is: 17,689,912.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,131,416.78 : 31,920,552.09 = 12,819,099.42 : x
  2. Step 2: Convert to fraction form
    23,131,416.78/31,920,552.09 = 12,819,099.42/x
  3. Step 3: Cross multiply
    23,131,416.78x = 31,920,552.09 × 12,819,099.42
  4. Step 4: Simplify right side
    23,131,416.78x = 409,192,730,782,998.81
  5. Step 5: Solve for x
    x = 409,192,730,782,998.81/23,131,416.78
  6. Step 6: Final answer
    x = 17,689,912.15

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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.