Home / 12,636.36-17,429.76-7,912.44

Finding the Fourth Proportional to 12,636.36, 17,429.76 and 7,912.44

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Solution

The fourth proportional to 12,636.36, 17,429.76 and 7,912.44 is: 10,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.36 : 17,429.76 = 7,912.44 : x
  2. Step 2: Convert to fraction form
    12,636.36/17,429.76 = 7,912.44/x
  3. Step 3: Cross multiply
    12,636.36x = 17,429.76 × 7,912.44
  4. Step 4: Simplify right side
    12,636.36x = 137,911,930.21
  5. Step 5: Solve for x
    x = 137,911,930.21/12,636.36
  6. Step 6: Final answer
    x = 10,913.90

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1.5x scale

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.