Home / 20,109.41-27,751.50-11,157.06

Finding the Fourth Proportional to 20,109.41, 27,751.50 and 11,157.06

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Solution

The fourth proportional to 20,109.41, 27,751.50 and 11,157.06 is: 15,397.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.41 : 27,751.50 = 11,157.06 : x
  2. Step 2: Convert to fraction form
    20,109.41/27,751.50 = 11,157.06/x
  3. Step 3: Cross multiply
    20,109.41x = 27,751.50 × 11,157.06
  4. Step 4: Simplify right side
    20,109.41x = 309,625,254.66
  5. Step 5: Solve for x
    x = 309,625,254.66/20,109.41
  6. Step 6: Final answer
    x = 15,397.03

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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.