Home / 20,071.15-27,701.61-11,571.77

Finding the Fourth Proportional to 20,071.15, 27,701.61 and 11,571.77

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Solution

The fourth proportional to 20,071.15, 27,701.61 and 11,571.77 is: 15,971.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.15 : 27,701.61 = 11,571.77 : x
  2. Step 2: Convert to fraction form
    20,071.15/27,701.61 = 11,571.77/x
  3. Step 3: Cross multiply
    20,071.15x = 27,701.61 × 11,571.77
  4. Step 4: Simplify right side
    20,071.15x = 320,556,659.55
  5. Step 5: Solve for x
    x = 320,556,659.55/20,071.15
  6. Step 6: Final answer
    x = 15,971.02

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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.