Home / 21,829.78-32,727.18-8,678.62

Finding the Fourth Proportional to 21,829.78, 32,727.18 and 8,678.62

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Solution

The fourth proportional to 21,829.78, 32,727.18 and 8,678.62 is: 13,010.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.78 : 32,727.18 = 8,678.62 : x
  2. Step 2: Convert to fraction form
    21,829.78/32,727.18 = 8,678.62/x
  3. Step 3: Cross multiply
    21,829.78x = 32,727.18 × 8,678.62
  4. Step 4: Simplify right side
    21,829.78x = 284,026,758.89
  5. Step 5: Solve for x
    x = 284,026,758.89/21,829.78
  6. Step 6: Final answer
    x = 13,010.98

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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.