Home / 20,156.09-27,814.19-11,203.28

Finding the Fourth Proportional to 20,156.09, 27,814.19 and 11,203.28

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Solution

The fourth proportional to 20,156.09, 27,814.19 and 11,203.28 is: 15,459.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.09 : 27,814.19 = 11,203.28 : x
  2. Step 2: Convert to fraction form
    20,156.09/27,814.19 = 11,203.28/x
  3. Step 3: Cross multiply
    20,156.09x = 27,814.19 × 11,203.28
  4. Step 4: Simplify right side
    20,156.09x = 311,609,963.46
  5. Step 5: Solve for x
    x = 311,609,963.46/20,156.09
  6. Step 6: Final answer
    x = 15,459.85

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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.