Home / 13,208.70-18,228.24-7,240.80

Finding the Fourth Proportional to 13,208.70, 18,228.24 and 7,240.80

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Solution

The fourth proportional to 13,208.70, 18,228.24 and 7,240.80 is: 9,992.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.70 : 18,228.24 = 7,240.80 : x
  2. Step 2: Convert to fraction form
    13,208.70/18,228.24 = 7,240.80/x
  3. Step 3: Cross multiply
    13,208.70x = 18,228.24 × 7,240.80
  4. Step 4: Simplify right side
    13,208.70x = 131,987,040.19
  5. Step 5: Solve for x
    x = 131,987,040.19/13,208.70
  6. Step 6: Final answer
    x = 9,992.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.