Home / 12,161.12-16,775.66-7,622.83

Finding the Fourth Proportional to 12,161.12, 16,775.66 and 7,622.83

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Solution

The fourth proportional to 12,161.12, 16,775.66 and 7,622.83 is: 10,515.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,161.12 : 16,775.66 = 7,622.83 : x
  2. Step 2: Convert to fraction form
    12,161.12/16,775.66 = 7,622.83/x
  3. Step 3: Cross multiply
    12,161.12x = 16,775.66 × 7,622.83
  4. Step 4: Simplify right side
    12,161.12x = 127,878,048.65
  5. Step 5: Solve for x
    x = 127,878,048.65/12,161.12
  6. Step 6: Final answer
    x = 10,515.31

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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.