Home / 18,991.24-28,471.26-12,334.60

Finding the Fourth Proportional to 18,991.24, 28,471.26 and 12,334.60

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Solution

The fourth proportional to 18,991.24, 28,471.26 and 12,334.60 is: 18,491.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.24 : 28,471.26 = 12,334.60 : x
  2. Step 2: Convert to fraction form
    18,991.24/28,471.26 = 12,334.60/x
  3. Step 3: Cross multiply
    18,991.24x = 28,471.26 × 12,334.60
  4. Step 4: Simplify right side
    18,991.24x = 351,181,603.60
  5. Step 5: Solve for x
    x = 351,181,603.60/18,991.24
  6. Step 6: Final answer
    x = 18,491.77

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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.