Home / 9,420.03-14,129.78-3,871.80

Finding the Fourth Proportional to 9,420.03, 14,129.78 and 3,871.80

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Solution

The fourth proportional to 9,420.03, 14,129.78 and 3,871.80 is: 5,807.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.03 : 14,129.78 = 3,871.80 : x
  2. Step 2: Convert to fraction form
    9,420.03/14,129.78 = 3,871.80/x
  3. Step 3: Cross multiply
    9,420.03x = 14,129.78 × 3,871.80
  4. Step 4: Simplify right side
    9,420.03x = 54,707,662.85
  5. Step 5: Solve for x
    x = 54,707,662.85/9,420.03
  6. Step 6: Final answer
    x = 5,807.59

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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.