Home / 21,235.05-31,851.77-6,443.37

Finding the Fourth Proportional to 21,235.05, 31,851.77 and 6,443.37

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Solution

The fourth proportional to 21,235.05, 31,851.77 and 6,443.37 is: 9,664.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.05 : 31,851.77 = 6,443.37 : x
  2. Step 2: Convert to fraction form
    21,235.05/31,851.77 = 6,443.37/x
  3. Step 3: Cross multiply
    21,235.05x = 31,851.77 × 6,443.37
  4. Step 4: Simplify right side
    21,235.05x = 205,232,820.79
  5. Step 5: Solve for x
    x = 205,232,820.79/21,235.05
  6. Step 6: Final answer
    x = 9,664.81

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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.