Home / 21,539.44-29,719.08-12,581.80

Finding the Fourth Proportional to 21,539.44, 29,719.08 and 12,581.80

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Solution

The fourth proportional to 21,539.44, 29,719.08 and 12,581.80 is: 17,359.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,539.44 : 29,719.08 = 12,581.80 : x
  2. Step 2: Convert to fraction form
    21,539.44/29,719.08 = 12,581.80/x
  3. Step 3: Cross multiply
    21,539.44x = 29,719.08 × 12,581.80
  4. Step 4: Simplify right side
    21,539.44x = 373,919,520.74
  5. Step 5: Solve for x
    x = 373,919,520.74/21,539.44
  6. Step 6: Final answer
    x = 17,359.76

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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.