Home / 10,929.72-16,392.60-3,136.68

Finding the Fourth Proportional to 10,929.72, 16,392.60 and 3,136.68

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Solution

The fourth proportional to 10,929.72, 16,392.60 and 3,136.68 is: 4,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.72 : 16,392.60 = 3,136.68 : x
  2. Step 2: Convert to fraction form
    10,929.72/16,392.60 = 3,136.68/x
  3. Step 3: Cross multiply
    10,929.72x = 16,392.60 × 3,136.68
  4. Step 4: Simplify right side
    10,929.72x = 51,418,340.57
  5. Step 5: Solve for x
    x = 51,418,340.57/10,929.72
  6. Step 6: Final answer
    x = 4,704.45

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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.