Home / 21,272.36-31,910.01-7,226.66

Finding the Fourth Proportional to 21,272.36, 31,910.01 and 7,226.66

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Solution

The fourth proportional to 21,272.36, 31,910.01 and 7,226.66 is: 10,840.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.36 : 31,910.01 = 7,226.66 : x
  2. Step 2: Convert to fraction form
    21,272.36/31,910.01 = 7,226.66/x
  3. Step 3: Cross multiply
    21,272.36x = 31,910.01 × 7,226.66
  4. Step 4: Simplify right side
    21,272.36x = 230,602,633.32
  5. Step 5: Solve for x
    x = 230,602,633.32/21,272.36
  6. Step 6: Final answer
    x = 10,840.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.