Home / 19,986.48-29,993.12-8,299.68

Finding the Fourth Proportional to 19,986.48, 29,993.12 and 8,299.68

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Solution

The fourth proportional to 19,986.48, 29,993.12 and 8,299.68 is: 12,455.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.48 : 29,993.12 = 8,299.68 : x
  2. Step 2: Convert to fraction form
    19,986.48/29,993.12 = 8,299.68/x
  3. Step 3: Cross multiply
    19,986.48x = 29,993.12 × 8,299.68
  4. Step 4: Simplify right side
    19,986.48x = 248,933,298.20
  5. Step 5: Solve for x
    x = 248,933,298.20/19,986.48
  6. Step 6: Final answer
    x = 12,455.08

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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.