Home / 20,810.22-28,711.07-11,851.37

Finding the Fourth Proportional to 20,810.22, 28,711.07 and 11,851.37

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Solution

The fourth proportional to 20,810.22, 28,711.07 and 11,851.37 is: 16,350.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,810.22 : 28,711.07 = 11,851.37 : x
  2. Step 2: Convert to fraction form
    20,810.22/28,711.07 = 11,851.37/x
  3. Step 3: Cross multiply
    20,810.22x = 28,711.07 × 11,851.37
  4. Step 4: Simplify right side
    20,810.22x = 340,265,513.67
  5. Step 5: Solve for x
    x = 340,265,513.67/20,810.22
  6. Step 6: Final answer
    x = 16,350.88

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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.