Home / 20,127.29-30,199.47-10,764.88

Finding the Fourth Proportional to 20,127.29, 30,199.47 and 10,764.88

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Solution

The fourth proportional to 20,127.29, 30,199.47 and 10,764.88 is: 16,151.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.29 : 30,199.47 = 10,764.88 : x
  2. Step 2: Convert to fraction form
    20,127.29/30,199.47 = 10,764.88/x
  3. Step 3: Cross multiply
    20,127.29x = 30,199.47 × 10,764.88
  4. Step 4: Simplify right side
    20,127.29x = 325,093,519.62
  5. Step 5: Solve for x
    x = 325,093,519.62/20,127.29
  6. Step 6: Final answer
    x = 16,151.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.