Home / 13,872.36-19,147.86-7,907.25

Finding the Fourth Proportional to 13,872.36, 19,147.86 and 7,907.25

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Solution

The fourth proportional to 13,872.36, 19,147.86 and 7,907.25 is: 10,914.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.36 : 19,147.86 = 7,907.25 : x
  2. Step 2: Convert to fraction form
    13,872.36/19,147.86 = 7,907.25/x
  3. Step 3: Cross multiply
    13,872.36x = 19,147.86 × 7,907.25
  4. Step 4: Simplify right side
    13,872.36x = 151,406,915.99
  5. Step 5: Solve for x
    x = 151,406,915.99/13,872.36
  6. Step 6: Final answer
    x = 10,914.29

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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.