Home / 19,720.56-27,211.44-11,335.44

Finding the Fourth Proportional to 19,720.56, 27,211.44 and 11,335.44

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Solution

The fourth proportional to 19,720.56, 27,211.44 and 11,335.44 is: 15,641.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.56 : 27,211.44 = 11,335.44 : x
  2. Step 2: Convert to fraction form
    19,720.56/27,211.44 = 11,335.44/x
  3. Step 3: Cross multiply
    19,720.56x = 27,211.44 × 11,335.44
  4. Step 4: Simplify right side
    19,720.56x = 308,453,645.43
  5. Step 5: Solve for x
    x = 308,453,645.43/19,720.56
  6. Step 6: Final answer
    x = 15,641.22

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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.