Home / 21,340.68-29,449.62-12,388.92

Finding the Fourth Proportional to 21,340.68, 29,449.62 and 12,388.92

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Solution

The fourth proportional to 21,340.68, 29,449.62 and 12,388.92 is: 17,096.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,340.68 : 29,449.62 = 12,388.92 : x
  2. Step 2: Convert to fraction form
    21,340.68/29,449.62 = 12,388.92/x
  3. Step 3: Cross multiply
    21,340.68x = 29,449.62 × 12,388.92
  4. Step 4: Simplify right side
    21,340.68x = 364,848,986.21
  5. Step 5: Solve for x
    x = 364,848,986.21/21,340.68
  6. Step 6: Final answer
    x = 17,096.41

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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.