Home / 21,619.44-29,833.92-12,188.88

Finding the Fourth Proportional to 21,619.44, 29,833.92 and 12,188.88

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Solution

The fourth proportional to 21,619.44, 29,833.92 and 12,188.88 is: 16,820.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.44 : 29,833.92 = 12,188.88 : x
  2. Step 2: Convert to fraction form
    21,619.44/29,833.92 = 12,188.88/x
  3. Step 3: Cross multiply
    21,619.44x = 29,833.92 × 12,188.88
  4. Step 4: Simplify right side
    21,619.44x = 363,642,070.81
  5. Step 5: Solve for x
    x = 363,642,070.81/21,619.44
  6. Step 6: Final answer
    x = 16,820.14

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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.