Home / 15,696.22-21,660.93-8,622.79

Finding the Fourth Proportional to 15,696.22, 21,660.93 and 8,622.79

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Solution

The fourth proportional to 15,696.22, 21,660.93 and 8,622.79 is: 11,899.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.22 : 21,660.93 = 8,622.79 : x
  2. Step 2: Convert to fraction form
    15,696.22/21,660.93 = 8,622.79/x
  3. Step 3: Cross multiply
    15,696.22x = 21,660.93 × 8,622.79
  4. Step 4: Simplify right side
    15,696.22x = 186,777,650.59
  5. Step 5: Solve for x
    x = 186,777,650.59/15,696.22
  6. Step 6: Final answer
    x = 11,899.53

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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.