Home / 20,861.07-31,298.43-7,714.44

Finding the Fourth Proportional to 20,861.07, 31,298.43 and 7,714.44

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Solution

The fourth proportional to 20,861.07, 31,298.43 and 7,714.44 is: 11,574.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.07 : 31,298.43 = 7,714.44 : x
  2. Step 2: Convert to fraction form
    20,861.07/31,298.43 = 7,714.44/x
  3. Step 3: Cross multiply
    20,861.07x = 31,298.43 × 7,714.44
  4. Step 4: Simplify right side
    20,861.07x = 241,449,860.33
  5. Step 5: Solve for x
    x = 241,449,860.33/20,861.07
  6. Step 6: Final answer
    x = 11,574.18

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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.