Home / 11,772.06-16,230.69-8,622.78

Finding the Fourth Proportional to 11,772.06, 16,230.69 and 8,622.78

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Solution

The fourth proportional to 11,772.06, 16,230.69 and 8,622.78 is: 11,888.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,772.06 : 16,230.69 = 8,622.78 : x
  2. Step 2: Convert to fraction form
    11,772.06/16,230.69 = 8,622.78/x
  3. Step 3: Cross multiply
    11,772.06x = 16,230.69 × 8,622.78
  4. Step 4: Simplify right side
    11,772.06x = 139,953,669.12
  5. Step 5: Solve for x
    x = 139,953,669.12/11,772.06
  6. Step 6: Final answer
    x = 11,888.63

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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.