Home / 20,753.64-31,080.96-11,379.60

Finding the Fourth Proportional to 20,753.64, 31,080.96 and 11,379.60

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Solution

The fourth proportional to 20,753.64, 31,080.96 and 11,379.60 is: 17,042.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,753.64 : 31,080.96 = 11,379.60 : x
  2. Step 2: Convert to fraction form
    20,753.64/31,080.96 = 11,379.60/x
  3. Step 3: Cross multiply
    20,753.64x = 31,080.96 × 11,379.60
  4. Step 4: Simplify right side
    20,753.64x = 353,688,892.42
  5. Step 5: Solve for x
    x = 353,688,892.42/20,753.64
  6. Step 6: Final answer
    x = 17,042.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.