Home / 20,079.86-27,710.44-11,127.51

Finding the Fourth Proportional to 20,079.86, 27,710.44 and 11,127.51

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Solution

The fourth proportional to 20,079.86, 27,710.44 and 11,127.51 is: 15,356.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.86 : 27,710.44 = 11,127.51 : x
  2. Step 2: Convert to fraction form
    20,079.86/27,710.44 = 11,127.51/x
  3. Step 3: Cross multiply
    20,079.86x = 27,710.44 × 11,127.51
  4. Step 4: Simplify right side
    20,079.86x = 308,348,198.20
  5. Step 5: Solve for x
    x = 308,348,198.20/20,079.86
  6. Step 6: Final answer
    x = 15,356.09

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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.