Home / 21,151.58-31,727.40-8,669.28

Finding the Fourth Proportional to 21,151.58, 31,727.40 and 8,669.28

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Solution

The fourth proportional to 21,151.58, 31,727.40 and 8,669.28 is: 13,003.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.58 : 31,727.40 = 8,669.28 : x
  2. Step 2: Convert to fraction form
    21,151.58/31,727.40 = 8,669.28/x
  3. Step 3: Cross multiply
    21,151.58x = 31,727.40 × 8,669.28
  4. Step 4: Simplify right side
    21,151.58x = 275,053,714.27
  5. Step 5: Solve for x
    x = 275,053,714.27/21,151.58
  6. Step 6: Final answer
    x = 13,003.93

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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.