Home / 12,121.10-16,726.83-7,929.26

Finding the Fourth Proportional to 12,121.10, 16,726.83 and 7,929.26

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Solution

The fourth proportional to 12,121.10, 16,726.83 and 7,929.26 is: 10,942.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.10 : 16,726.83 = 7,929.26 : x
  2. Step 2: Convert to fraction form
    12,121.10/16,726.83 = 7,929.26/x
  3. Step 3: Cross multiply
    12,121.10x = 16,726.83 × 7,929.26
  4. Step 4: Simplify right side
    12,121.10x = 132,631,384.05
  5. Step 5: Solve for x
    x = 132,631,384.05/12,121.10
  6. Step 6: Final answer
    x = 10,942.19

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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.