Home / 12,157,916.87-18,243,161.40-5,339,282.78

Finding the Fourth Proportional to 12,157,916.87, 18,243,161.40 and 5,339,282.78

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Solution

The fourth proportional to 12,157,916.87, 18,243,161.40 and 5,339,282.78 is: 8,011,684.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157,916.87 : 18,243,161.40 = 5,339,282.78 : x
  2. Step 2: Convert to fraction form
    12,157,916.87/18,243,161.40 = 5,339,282.78/x
  3. Step 3: Cross multiply
    12,157,916.87x = 18,243,161.40 × 5,339,282.78
  4. Step 4: Simplify right side
    12,157,916.87x = 97,405,397,424,564.89
  5. Step 5: Solve for x
    x = 97,405,397,424,564.89/12,157,916.87
  6. Step 6: Final answer
    x = 8,011,684.77

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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.