Home / 21,498.92-31,988.26-20,963.24

Finding the Fourth Proportional to 21,498.92, 31,988.26 and 20,963.24

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Solution

The fourth proportional to 21,498.92, 31,988.26 and 20,963.24 is: 31,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,498.92 : 31,988.26 = 20,963.24 : x
  2. Step 2: Convert to fraction form
    21,498.92/31,988.26 = 20,963.24/x
  3. Step 3: Cross multiply
    21,498.92x = 31,988.26 × 20,963.24
  4. Step 4: Simplify right side
    21,498.92x = 670,577,571.56
  5. Step 5: Solve for x
    x = 670,577,571.56/21,498.92
  6. Step 6: Final answer
    x = 31,191.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.