Home / 20,805.20-28,713.80-11,852.24

Finding the Fourth Proportional to 20,805.20, 28,713.80 and 11,852.24

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Solution

The fourth proportional to 20,805.20, 28,713.80 and 11,852.24 is: 16,357.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,805.20 : 28,713.80 = 11,852.24 : x
  2. Step 2: Convert to fraction form
    20,805.20/28,713.80 = 11,852.24/x
  3. Step 3: Cross multiply
    20,805.20x = 28,713.80 × 11,852.24
  4. Step 4: Simplify right side
    20,805.20x = 340,322,848.91
  5. Step 5: Solve for x
    x = 340,322,848.91/20,805.20
  6. Step 6: Final answer
    x = 16,357.59

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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.