Home / 18,800.28-28,200.70-7,110.36

Finding the Fourth Proportional to 18,800.28, 28,200.70 and 7,110.36

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Solution

The fourth proportional to 18,800.28, 28,200.70 and 7,110.36 is: 10,665.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.28 : 28,200.70 = 7,110.36 : x
  2. Step 2: Convert to fraction form
    18,800.28/28,200.70 = 7,110.36/x
  3. Step 3: Cross multiply
    18,800.28x = 28,200.70 × 7,110.36
  4. Step 4: Simplify right side
    18,800.28x = 200,517,129.25
  5. Step 5: Solve for x
    x = 200,517,129.25/18,800.28
  6. Step 6: Final answer
    x = 10,665.65

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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.