Home / 20,714.91-28,586.56-11,283.48

Finding the Fourth Proportional to 20,714.91, 28,586.56 and 11,283.48

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Solution

The fourth proportional to 20,714.91, 28,586.56 and 11,283.48 is: 15,571.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,714.91 : 28,586.56 = 11,283.48 : x
  2. Step 2: Convert to fraction form
    20,714.91/28,586.56 = 11,283.48/x
  3. Step 3: Cross multiply
    20,714.91x = 28,586.56 × 11,283.48
  4. Step 4: Simplify right side
    20,714.91x = 322,555,878.03
  5. Step 5: Solve for x
    x = 322,555,878.03/20,714.91
  6. Step 6: Final answer
    x = 15,571.19

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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.