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Finding the Fourth Proportional to 11,128.70, 16,693.05 and 5,296.70

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Solution

The fourth proportional to 11,128.70, 16,693.05 and 5,296.70 is: 7,945.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,128.70 : 16,693.05 = 5,296.70 : x
  2. Step 2: Convert to fraction form
    11,128.70/16,693.05 = 5,296.70/x
  3. Step 3: Cross multiply
    11,128.70x = 16,693.05 × 5,296.70
  4. Step 4: Simplify right side
    11,128.70x = 88,418,077.94
  5. Step 5: Solve for x
    x = 88,418,077.94/11,128.70
  6. Step 6: Final answer
    x = 7,945.05

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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.