Home / 11,200.88-15,447.48-7,220.72

Finding the Fourth Proportional to 11,200.88, 15,447.48 and 7,220.72

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Solution

The fourth proportional to 11,200.88, 15,447.48 and 7,220.72 is: 9,958.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,200.88 : 15,447.48 = 7,220.72 : x
  2. Step 2: Convert to fraction form
    11,200.88/15,447.48 = 7,220.72/x
  3. Step 3: Cross multiply
    11,200.88x = 15,447.48 × 7,220.72
  4. Step 4: Simplify right side
    11,200.88x = 111,541,927.79
  5. Step 5: Solve for x
    x = 111,541,927.79/11,200.88
  6. Step 6: Final answer
    x = 9,958.32

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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.