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Finding the Fourth Proportional to 18,910.36, 28,365.54 and 5,059

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Solution

The fourth proportional to 18,910.36, 28,365.54 and 5,059 is: 7,588.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.36 : 28,365.54 = 5,059 : x
  2. Step 2: Convert to fraction form
    18,910.36/28,365.54 = 5,059/x
  3. Step 3: Cross multiply
    18,910.36x = 28,365.54 × 5,059
  4. Step 4: Simplify right side
    18,910.36x = 143,501,266.86
  5. Step 5: Solve for x
    x = 143,501,266.86/18,910.36
  6. Step 6: Final answer
    x = 7,588.50

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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.