Home / 39,596.43-54,640.23-21,688.55

Finding the Fourth Proportional to 39,596.43, 54,640.23 and 21,688.55

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Solution

The fourth proportional to 39,596.43, 54,640.23 and 21,688.55 is: 29,928.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,596.43 : 54,640.23 = 21,688.55 : x
  2. Step 2: Convert to fraction form
    39,596.43/54,640.23 = 21,688.55/x
  3. Step 3: Cross multiply
    39,596.43x = 54,640.23 × 21,688.55
  4. Step 4: Simplify right side
    39,596.43x = 1,185,067,360.37
  5. Step 5: Solve for x
    x = 1,185,067,360.37/39,596.43
  6. Step 6: Final answer
    x = 29,928.64

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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.