Home / 21,308.06-29,405.13-11,876.63

Finding the Fourth Proportional to 21,308.06, 29,405.13 and 11,876.63

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Solution

The fourth proportional to 21,308.06, 29,405.13 and 11,876.63 is: 16,389.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.06 : 29,405.13 = 11,876.63 : x
  2. Step 2: Convert to fraction form
    21,308.06/29,405.13 = 11,876.63/x
  3. Step 3: Cross multiply
    21,308.06x = 29,405.13 × 11,876.63
  4. Step 4: Simplify right side
    21,308.06x = 349,233,657.55
  5. Step 5: Solve for x
    x = 349,233,657.55/21,308.06
  6. Step 6: Final answer
    x = 16,389.74

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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.