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Finding the Fourth Proportional to 19,201.77, 28,782.89 and 7,352.75

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Solution

The fourth proportional to 19,201.77, 28,782.89 and 7,352.75 is: 11,021.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,201.77 : 28,782.89 = 7,352.75 : x
  2. Step 2: Convert to fraction form
    19,201.77/28,782.89 = 7,352.75/x
  3. Step 3: Cross multiply
    19,201.77x = 28,782.89 × 7,352.75
  4. Step 4: Simplify right side
    19,201.77x = 211,633,457.21
  5. Step 5: Solve for x
    x = 211,633,457.21/19,201.77
  6. Step 6: Final answer
    x = 11,021.56

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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.