Home / 20,126.27-27,768.56-12,580.25

Finding the Fourth Proportional to 20,126.27, 27,768.56 and 12,580.25

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Solution

The fourth proportional to 20,126.27, 27,768.56 and 12,580.25 is: 17,357.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.27 : 27,768.56 = 12,580.25 : x
  2. Step 2: Convert to fraction form
    20,126.27/27,768.56 = 12,580.25/x
  3. Step 3: Cross multiply
    20,126.27x = 27,768.56 × 12,580.25
  4. Step 4: Simplify right side
    20,126.27x = 349,335,319.55
  5. Step 5: Solve for x
    x = 349,335,319.55/20,126.27
  6. Step 6: Final answer
    x = 17,357.19

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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.