Home / 10,840.40-16,249.80-4,986.80

Finding the Fourth Proportional to 10,840.40, 16,249.80 and 4,986.80

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Solution

The fourth proportional to 10,840.40, 16,249.80 and 4,986.80 is: 7,475.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,840.40 : 16,249.80 = 4,986.80 : x
  2. Step 2: Convert to fraction form
    10,840.40/16,249.80 = 4,986.80/x
  3. Step 3: Cross multiply
    10,840.40x = 16,249.80 × 4,986.80
  4. Step 4: Simplify right side
    10,840.40x = 81,034,502.64
  5. Step 5: Solve for x
    x = 81,034,502.64/10,840.40
  6. Step 6: Final answer
    x = 7,475.23

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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.