Home / 14,181.42-21,275.22-5,418.84

Finding the Fourth Proportional to 14,181.42, 21,275.22 and 5,418.84

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Solution

The fourth proportional to 14,181.42, 21,275.22 and 5,418.84 is: 8,129.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,181.42 : 21,275.22 = 5,418.84 : x
  2. Step 2: Convert to fraction form
    14,181.42/21,275.22 = 5,418.84/x
  3. Step 3: Cross multiply
    14,181.42x = 21,275.22 × 5,418.84
  4. Step 4: Simplify right side
    14,181.42x = 115,287,013.14
  5. Step 5: Solve for x
    x = 115,287,013.14/14,181.42
  6. Step 6: Final answer
    x = 8,129.44

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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.