Home / 13,157.21-18,160.26-8,449.69

Finding the Fourth Proportional to 13,157.21, 18,160.26 and 8,449.69

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Solution

The fourth proportional to 13,157.21, 18,160.26 and 8,449.69 is: 11,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.21 : 18,160.26 = 8,449.69 : x
  2. Step 2: Convert to fraction form
    13,157.21/18,160.26 = 8,449.69/x
  3. Step 3: Cross multiply
    13,157.21x = 18,160.26 × 8,449.69
  4. Step 4: Simplify right side
    13,157.21x = 153,448,567.32
  5. Step 5: Solve for x
    x = 153,448,567.32/13,157.21
  6. Step 6: Final answer
    x = 11,662.70

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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.