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Finding the Fourth Proportional to 11,028.70, 16,543.02 and 2,820.70

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Solution

The fourth proportional to 11,028.70, 16,543.02 and 2,820.70 is: 4,231.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,028.70 : 16,543.02 = 2,820.70 : x
  2. Step 2: Convert to fraction form
    11,028.70/16,543.02 = 2,820.70/x
  3. Step 3: Cross multiply
    11,028.70x = 16,543.02 × 2,820.70
  4. Step 4: Simplify right side
    11,028.70x = 46,662,896.51
  5. Step 5: Solve for x
    x = 46,662,896.51/11,028.70
  6. Step 6: Final answer
    x = 4,231.04

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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.