Home / 13,182.84-18,198.26-8,409.20

Finding the Fourth Proportional to 13,182.84, 18,198.26 and 8,409.20

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Solution

The fourth proportional to 13,182.84, 18,198.26 and 8,409.20 is: 11,608.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,182.84 : 18,198.26 = 8,409.20 : x
  2. Step 2: Convert to fraction form
    13,182.84/18,198.26 = 8,409.20/x
  3. Step 3: Cross multiply
    13,182.84x = 18,198.26 × 8,409.20
  4. Step 4: Simplify right side
    13,182.84x = 153,032,807.99
  5. Step 5: Solve for x
    x = 153,032,807.99/13,182.84
  6. Step 6: Final answer
    x = 11,608.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.