Home / 20,707.44-28,575.72-11,275.80

Finding the Fourth Proportional to 20,707.44, 28,575.72 and 11,275.80

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Solution

The fourth proportional to 20,707.44, 28,575.72 and 11,275.80 is: 15,560.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.44 : 28,575.72 = 11,275.80 : x
  2. Step 2: Convert to fraction form
    20,707.44/28,575.72 = 11,275.80/x
  3. Step 3: Cross multiply
    20,707.44x = 28,575.72 × 11,275.80
  4. Step 4: Simplify right side
    20,707.44x = 322,214,103.58
  5. Step 5: Solve for x
    x = 322,214,103.58/20,707.44
  6. Step 6: Final answer
    x = 15,560.31

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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.