Home / 20,808.24-28,714.56-11,376.96

Finding the Fourth Proportional to 20,808.24, 28,714.56 and 11,376.96

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Solution

The fourth proportional to 20,808.24, 28,714.56 and 11,376.96 is: 15,699.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,808.24 : 28,714.56 = 11,376.96 : x
  2. Step 2: Convert to fraction form
    20,808.24/28,714.56 = 11,376.96/x
  3. Step 3: Cross multiply
    20,808.24x = 28,714.56 × 11,376.96
  4. Step 4: Simplify right side
    20,808.24x = 326,684,400.54
  5. Step 5: Solve for x
    x = 326,684,400.54/20,808.24
  6. Step 6: Final answer
    x = 15,699.76

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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.