Home / 20,714.40-28,586.59-11,761.61

Finding the Fourth Proportional to 20,714.40, 28,586.59 and 11,761.61

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Solution

The fourth proportional to 20,714.40, 28,586.59 and 11,761.61 is: 16,231.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,714.40 : 28,586.59 = 11,761.61 : x
  2. Step 2: Convert to fraction form
    20,714.40/28,586.59 = 11,761.61/x
  3. Step 3: Cross multiply
    20,714.40x = 28,586.59 × 11,761.61
  4. Step 4: Simplify right side
    20,714.40x = 336,224,322.81
  5. Step 5: Solve for x
    x = 336,224,322.81/20,714.40
  6. Step 6: Final answer
    x = 16,231.43

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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.