Home / 20,686.06-28,546.86-11,254.69

Finding the Fourth Proportional to 20,686.06, 28,546.86 and 11,254.69

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Solution

The fourth proportional to 20,686.06, 28,546.86 and 11,254.69 is: 15,531.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.06 : 28,546.86 = 11,254.69 : x
  2. Step 2: Convert to fraction form
    20,686.06/28,546.86 = 11,254.69/x
  3. Step 3: Cross multiply
    20,686.06x = 28,546.86 × 11,254.69
  4. Step 4: Simplify right side
    20,686.06x = 321,286,059.77
  5. Step 5: Solve for x
    x = 321,286,059.77/20,686.06
  6. Step 6: Final answer
    x = 15,531.53

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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.