Home / 20,714.51-28,586.58-11,283.68

Finding the Fourth Proportional to 20,714.51, 28,586.58 and 11,283.68

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Solution

The fourth proportional to 20,714.51, 28,586.58 and 11,283.68 is: 15,571.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,714.51 : 28,586.58 = 11,283.68 : x
  2. Step 2: Convert to fraction form
    20,714.51/28,586.58 = 11,283.68/x
  3. Step 3: Cross multiply
    20,714.51x = 28,586.58 × 11,283.68
  4. Step 4: Simplify right side
    20,714.51x = 322,561,821.01
  5. Step 5: Solve for x
    x = 322,561,821.01/20,714.51
  6. Step 6: Final answer
    x = 15,571.78

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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.