Home / 21,908.81-30,234.16-11,837.26

Finding the Fourth Proportional to 21,908.81, 30,234.16 and 11,837.26

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Solution

The fourth proportional to 21,908.81, 30,234.16 and 11,837.26 is: 16,335.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.81 : 30,234.16 = 11,837.26 : x
  2. Step 2: Convert to fraction form
    21,908.81/30,234.16 = 11,837.26/x
  3. Step 3: Cross multiply
    21,908.81x = 30,234.16 × 11,837.26
  4. Step 4: Simplify right side
    21,908.81x = 357,889,495.32
  5. Step 5: Solve for x
    x = 357,889,495.32/21,908.81
  6. Step 6: Final answer
    x = 16,335.41

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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.