Home / 13,912.85-19,199.80-7,539.44

Finding the Fourth Proportional to 13,912.85, 19,199.80 and 7,539.44

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Solution

The fourth proportional to 13,912.85, 19,199.80 and 7,539.44 is: 10,404.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.85 : 19,199.80 = 7,539.44 : x
  2. Step 2: Convert to fraction form
    13,912.85/19,199.80 = 7,539.44/x
  3. Step 3: Cross multiply
    13,912.85x = 19,199.80 × 7,539.44
  4. Step 4: Simplify right side
    13,912.85x = 144,755,625.26
  5. Step 5: Solve for x
    x = 144,755,625.26/13,912.85
  6. Step 6: Final answer
    x = 10,404.46

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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.