Home / 20,131.02-27,781.17-11,056.32

Finding the Fourth Proportional to 20,131.02, 27,781.17 and 11,056.32

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Solution

The fourth proportional to 20,131.02, 27,781.17 and 11,056.32 is: 15,257.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.02 : 27,781.17 = 11,056.32 : x
  2. Step 2: Convert to fraction form
    20,131.02/27,781.17 = 11,056.32/x
  3. Step 3: Cross multiply
    20,131.02x = 27,781.17 × 11,056.32
  4. Step 4: Simplify right side
    20,131.02x = 307,157,505.49
  5. Step 5: Solve for x
    x = 307,157,505.49/20,131.02
  6. Step 6: Final answer
    x = 15,257.92

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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.