Home / 21,308.25-29,405.52-11,876.88

Finding the Fourth Proportional to 21,308.25, 29,405.52 and 11,876.88

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Solution

The fourth proportional to 21,308.25, 29,405.52 and 11,876.88 is: 16,390.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.25 : 29,405.52 = 11,876.88 : x
  2. Step 2: Convert to fraction form
    21,308.25/29,405.52 = 11,876.88/x
  3. Step 3: Cross multiply
    21,308.25x = 29,405.52 × 11,876.88
  4. Step 4: Simplify right side
    21,308.25x = 349,245,832.38
  5. Step 5: Solve for x
    x = 349,245,832.38/21,308.25
  6. Step 6: Final answer
    x = 16,390.17

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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.