Home / 20,079.21-27,709.29-11,127.27

Finding the Fourth Proportional to 20,079.21, 27,709.29 and 11,127.27

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Solution

The fourth proportional to 20,079.21, 27,709.29 and 11,127.27 is: 15,355.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.21 : 27,709.29 = 11,127.27 : x
  2. Step 2: Convert to fraction form
    20,079.21/27,709.29 = 11,127.27/x
  3. Step 3: Cross multiply
    20,079.21x = 27,709.29 × 11,127.27
  4. Step 4: Simplify right side
    20,079.21x = 308,328,751.34
  5. Step 5: Solve for x
    x = 308,328,751.34/20,079.21
  6. Step 6: Final answer
    x = 15,355.62

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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.