Home / 18,889.75-28,330.97-7,200.23

Finding the Fourth Proportional to 18,889.75, 28,330.97 and 7,200.23

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Solution

The fourth proportional to 18,889.75, 28,330.97 and 7,200.23 is: 10,798.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.75 : 28,330.97 = 7,200.23 : x
  2. Step 2: Convert to fraction form
    18,889.75/28,330.97 = 7,200.23/x
  3. Step 3: Cross multiply
    18,889.75x = 28,330.97 × 7,200.23
  4. Step 4: Simplify right side
    18,889.75x = 203,989,588.95
  5. Step 5: Solve for x
    x = 203,989,588.95/18,889.75
  6. Step 6: Final answer
    x = 10,798.96

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1.5x scale

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.