Home / 13,184.21-18,195.44-7,878.92

Finding the Fourth Proportional to 13,184.21, 18,195.44 and 7,878.92

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Solution

The fourth proportional to 13,184.21, 18,195.44 and 7,878.92 is: 10,873.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,184.21 : 18,195.44 = 7,878.92 : x
  2. Step 2: Convert to fraction form
    13,184.21/18,195.44 = 7,878.92/x
  3. Step 3: Cross multiply
    13,184.21x = 18,195.44 × 7,878.92
  4. Step 4: Simplify right side
    13,184.21x = 143,360,285.75
  5. Step 5: Solve for x
    x = 143,360,285.75/13,184.21
  6. Step 6: Final answer
    x = 10,873.63

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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.