Home / 13,825.18-19,080.30-7,858.36

Finding the Fourth Proportional to 13,825.18, 19,080.30 and 7,858.36

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Solution

The fourth proportional to 13,825.18, 19,080.30 and 7,858.36 is: 10,845.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.18 : 19,080.30 = 7,858.36 : x
  2. Step 2: Convert to fraction form
    13,825.18/19,080.30 = 7,858.36/x
  3. Step 3: Cross multiply
    13,825.18x = 19,080.30 × 7,858.36
  4. Step 4: Simplify right side
    13,825.18x = 149,939,866.31
  5. Step 5: Solve for x
    x = 149,939,866.31/13,825.18
  6. Step 6: Final answer
    x = 10,845.42

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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.