Home / 13,907.98-19,192.75-7,620.31

Finding the Fourth Proportional to 13,907.98, 19,192.75 and 7,620.31

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Solution

The fourth proportional to 13,907.98, 19,192.75 and 7,620.31 is: 10,515.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.98 : 19,192.75 = 7,620.31 : x
  2. Step 2: Convert to fraction form
    13,907.98/19,192.75 = 7,620.31/x
  3. Step 3: Cross multiply
    13,907.98x = 19,192.75 × 7,620.31
  4. Step 4: Simplify right side
    13,907.98x = 146,254,704.75
  5. Step 5: Solve for x
    x = 146,254,704.75/13,907.98
  6. Step 6: Final answer
    x = 10,515.88

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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.