Home / 11,214.88-15,474.48-7,028.80

Finding the Fourth Proportional to 11,214.88, 15,474.48 and 7,028.80

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Solution

The fourth proportional to 11,214.88, 15,474.48 and 7,028.80 is: 9,698.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,214.88 : 15,474.48 = 7,028.80 : x
  2. Step 2: Convert to fraction form
    11,214.88/15,474.48 = 7,028.80/x
  3. Step 3: Cross multiply
    11,214.88x = 15,474.48 × 7,028.80
  4. Step 4: Simplify right side
    11,214.88x = 108,767,025.02
  5. Step 5: Solve for x
    x = 108,767,025.02/11,214.88
  6. Step 6: Final answer
    x = 9,698.46

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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.