Home / 13,198.58-18,213.50-7,890.26

Finding the Fourth Proportional to 13,198.58, 18,213.50 and 7,890.26

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Solution

The fourth proportional to 13,198.58, 18,213.50 and 7,890.26 is: 10,888.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.58 : 18,213.50 = 7,890.26 : x
  2. Step 2: Convert to fraction form
    13,198.58/18,213.50 = 7,890.26/x
  3. Step 3: Cross multiply
    13,198.58x = 18,213.50 × 7,890.26
  4. Step 4: Simplify right side
    13,198.58x = 143,709,250.51
  5. Step 5: Solve for x
    x = 143,709,250.51/13,198.58
  6. Step 6: Final answer
    x = 10,888.24

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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.