Home / 31,571.91-43,559.07-20,963.64

Finding the Fourth Proportional to 31,571.91, 43,559.07 and 20,963.64

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Solution

The fourth proportional to 31,571.91, 43,559.07 and 20,963.64 is: 28,923.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,571.91 : 43,559.07 = 20,963.64 : x
  2. Step 2: Convert to fraction form
    31,571.91/43,559.07 = 20,963.64/x
  3. Step 3: Cross multiply
    31,571.91x = 43,559.07 × 20,963.64
  4. Step 4: Simplify right side
    31,571.91x = 913,156,746.95
  5. Step 5: Solve for x
    x = 913,156,746.95/31,571.91
  6. Step 6: Final answer
    x = 28,923.08

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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.