Home / 20,741.06-28,622.85-11,309.66

Finding the Fourth Proportional to 20,741.06, 28,622.85 and 11,309.66

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Solution

The fourth proportional to 20,741.06, 28,622.85 and 11,309.66 is: 15,607.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.06 : 28,622.85 = 11,309.66 : x
  2. Step 2: Convert to fraction form
    20,741.06/28,622.85 = 11,309.66/x
  3. Step 3: Cross multiply
    20,741.06x = 28,622.85 × 11,309.66
  4. Step 4: Simplify right side
    20,741.06x = 323,714,701.73
  5. Step 5: Solve for x
    x = 323,714,701.73/20,741.06
  6. Step 6: Final answer
    x = 15,607.43

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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.