Home / 13,859.21-19,120.29-8,544.80

Finding the Fourth Proportional to 13,859.21, 19,120.29 and 8,544.80

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Solution

The fourth proportional to 13,859.21, 19,120.29 and 8,544.80 is: 11,788.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,859.21 : 19,120.29 = 8,544.80 : x
  2. Step 2: Convert to fraction form
    13,859.21/19,120.29 = 8,544.80/x
  3. Step 3: Cross multiply
    13,859.21x = 19,120.29 × 8,544.80
  4. Step 4: Simplify right side
    13,859.21x = 163,379,069.75
  5. Step 5: Solve for x
    x = 163,379,069.75/13,859.21
  6. Step 6: Final answer
    x = 11,788.48

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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.