Home / 13,825.90-19,080.41-7,778.04

Finding the Fourth Proportional to 13,825.90, 19,080.41 and 7,778.04

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Solution

The fourth proportional to 13,825.90, 19,080.41 and 7,778.04 is: 10,734.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.90 : 19,080.41 = 7,778.04 : x
  2. Step 2: Convert to fraction form
    13,825.90/19,080.41 = 7,778.04/x
  3. Step 3: Cross multiply
    13,825.90x = 19,080.41 × 7,778.04
  4. Step 4: Simplify right side
    13,825.90x = 148,408,144.50
  5. Step 5: Solve for x
    x = 148,408,144.50/13,825.90
  6. Step 6: Final answer
    x = 10,734.07

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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.