Home / 19,108.30-28,662.45-11,313.10

Finding the Fourth Proportional to 19,108.30, 28,662.45 and 11,313.10

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Solution

The fourth proportional to 19,108.30, 28,662.45 and 11,313.10 is: 16,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,108.30 : 28,662.45 = 11,313.10 : x
  2. Step 2: Convert to fraction form
    19,108.30/28,662.45 = 11,313.10/x
  3. Step 3: Cross multiply
    19,108.30x = 28,662.45 × 11,313.10
  4. Step 4: Simplify right side
    19,108.30x = 324,261,163.10
  5. Step 5: Solve for x
    x = 324,261,163.10/19,108.30
  6. Step 6: Final answer
    x = 16,969.65

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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.