Home / 20,685.82-28,546.38-11,254.36

Finding the Fourth Proportional to 20,685.82, 28,546.38 and 11,254.36

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Solution

The fourth proportional to 20,685.82, 28,546.38 and 11,254.36 is: 15,530.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.82 : 28,546.38 = 11,254.36 : x
  2. Step 2: Convert to fraction form
    20,685.82/28,546.38 = 11,254.36/x
  3. Step 3: Cross multiply
    20,685.82x = 28,546.38 × 11,254.36
  4. Step 4: Simplify right side
    20,685.82x = 321,271,237.22
  5. Step 5: Solve for x
    x = 321,271,237.22/20,685.82
  6. Step 6: Final answer
    x = 15,530.99

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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.