Home / 21,500.88-29,668.53-11,939.47

Finding the Fourth Proportional to 21,500.88, 29,668.53 and 11,939.47

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Solution

The fourth proportional to 21,500.88, 29,668.53 and 11,939.47 is: 16,474.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,500.88 : 29,668.53 = 11,939.47 : x
  2. Step 2: Convert to fraction form
    21,500.88/29,668.53 = 11,939.47/x
  3. Step 3: Cross multiply
    21,500.88x = 29,668.53 × 11,939.47
  4. Step 4: Simplify right side
    21,500.88x = 354,226,449.71
  5. Step 5: Solve for x
    x = 354,226,449.71/21,500.88
  6. Step 6: Final answer
    x = 16,474.97

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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.