Home / 21,800.28-30,083.82-12,727.38

Finding the Fourth Proportional to 21,800.28, 30,083.82 and 12,727.38

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Solution

The fourth proportional to 21,800.28, 30,083.82 and 12,727.38 is: 17,563.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,800.28 : 30,083.82 = 12,727.38 : x
  2. Step 2: Convert to fraction form
    21,800.28/30,083.82 = 12,727.38/x
  3. Step 3: Cross multiply
    21,800.28x = 30,083.82 × 12,727.38
  4. Step 4: Simplify right side
    21,800.28x = 382,888,208.99
  5. Step 5: Solve for x
    x = 382,888,208.99/21,800.28
  6. Step 6: Final answer
    x = 17,563.45

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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.