Home / 19,821.89-29,712.02-6,669.69

Finding the Fourth Proportional to 19,821.89, 29,712.02 and 6,669.69

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Solution

The fourth proportional to 19,821.89, 29,712.02 and 6,669.69 is: 9,997.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.89 : 29,712.02 = 6,669.69 : x
  2. Step 2: Convert to fraction form
    19,821.89/29,712.02 = 6,669.69/x
  3. Step 3: Cross multiply
    19,821.89x = 29,712.02 × 6,669.69
  4. Step 4: Simplify right side
    19,821.89x = 198,169,929.33
  5. Step 5: Solve for x
    x = 198,169,929.33/19,821.89
  6. Step 6: Final answer
    x = 9,997.53

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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.