Home / 13,907.82-19,192.80-7,620.19

Finding the Fourth Proportional to 13,907.82, 19,192.80 and 7,620.19

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Solution

The fourth proportional to 13,907.82, 19,192.80 and 7,620.19 is: 10,515.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.82 : 19,192.80 = 7,620.19 : x
  2. Step 2: Convert to fraction form
    13,907.82/19,192.80 = 7,620.19/x
  3. Step 3: Cross multiply
    13,907.82x = 19,192.80 × 7,620.19
  4. Step 4: Simplify right side
    13,907.82x = 146,252,782.63
  5. Step 5: Solve for x
    x = 146,252,782.63/13,907.82
  6. Step 6: Final answer
    x = 10,515.87

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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.