Home / 20,126.56-27,774.98-11,174.64

Finding the Fourth Proportional to 20,126.56, 27,774.98 and 11,174.64

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Solution

The fourth proportional to 20,126.56, 27,774.98 and 11,174.64 is: 15,421.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.56 : 27,774.98 = 11,174.64 : x
  2. Step 2: Convert to fraction form
    20,126.56/27,774.98 = 11,174.64/x
  3. Step 3: Cross multiply
    20,126.56x = 27,774.98 × 11,174.64
  4. Step 4: Simplify right side
    20,126.56x = 310,375,402.51
  5. Step 5: Solve for x
    x = 310,375,402.51/20,126.56
  6. Step 6: Final answer
    x = 15,421.18

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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.