Home / 15,727.22-21,703.71-8,653.79

Finding the Fourth Proportional to 15,727.22, 21,703.71 and 8,653.79

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Solution

The fourth proportional to 15,727.22, 21,703.71 and 8,653.79 is: 11,942.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,727.22 : 21,703.71 = 8,653.79 : x
  2. Step 2: Convert to fraction form
    15,727.22/21,703.71 = 8,653.79/x
  3. Step 3: Cross multiply
    15,727.22x = 21,703.71 × 8,653.79
  4. Step 4: Simplify right side
    15,727.22x = 187,819,435.27
  5. Step 5: Solve for x
    x = 187,819,435.27/15,727.22
  6. Step 6: Final answer
    x = 11,942.32

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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.