Home / 20,127.43-27,776.43-11,053.21

Finding the Fourth Proportional to 20,127.43, 27,776.43 and 11,053.21

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Solution

The fourth proportional to 20,127.43, 27,776.43 and 11,053.21 is: 15,253.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.43 : 27,776.43 = 11,053.21 : x
  2. Step 2: Convert to fraction form
    20,127.43/27,776.43 = 11,053.21/x
  3. Step 3: Cross multiply
    20,127.43x = 27,776.43 × 11,053.21
  4. Step 4: Simplify right side
    20,127.43x = 307,018,713.84
  5. Step 5: Solve for x
    x = 307,018,713.84/20,127.43
  6. Step 6: Final answer
    x = 15,253.75

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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.