Home / 13,452.99-18,558.21-7,860.75

Finding the Fourth Proportional to 13,452.99, 18,558.21 and 7,860.75

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Solution

The fourth proportional to 13,452.99, 18,558.21 and 7,860.75 is: 10,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,452.99 : 18,558.21 = 7,860.75 : x
  2. Step 2: Convert to fraction form
    13,452.99/18,558.21 = 7,860.75/x
  3. Step 3: Cross multiply
    13,452.99x = 18,558.21 × 7,860.75
  4. Step 4: Simplify right side
    13,452.99x = 145,881,449.26
  5. Step 5: Solve for x
    x = 145,881,449.26/13,452.99
  6. Step 6: Final answer
    x = 10,843.79

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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.