Home / 23,136.94-31,982.77-20,643.76

Finding the Fourth Proportional to 23,136.94, 31,982.77 and 20,643.76

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Solution

The fourth proportional to 23,136.94, 31,982.77 and 20,643.76 is: 28,536.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,136.94 : 31,982.77 = 20,643.76 : x
  2. Step 2: Convert to fraction form
    23,136.94/31,982.77 = 20,643.76/x
  3. Step 3: Cross multiply
    23,136.94x = 31,982.77 × 20,643.76
  4. Step 4: Simplify right side
    23,136.94x = 660,244,628.02
  5. Step 5: Solve for x
    x = 660,244,628.02/23,136.94
  6. Step 6: Final answer
    x = 28,536.39

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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.