Home / 13,162.37-18,159.21-8,449.38

Finding the Fourth Proportional to 13,162.37, 18,159.21 and 8,449.38

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Solution

The fourth proportional to 13,162.37, 18,159.21 and 8,449.38 is: 11,657.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,162.37 : 18,159.21 = 8,449.38 : x
  2. Step 2: Convert to fraction form
    13,162.37/18,159.21 = 8,449.38/x
  3. Step 3: Cross multiply
    13,162.37x = 18,159.21 × 8,449.38
  4. Step 4: Simplify right side
    13,162.37x = 153,434,065.79
  5. Step 5: Solve for x
    x = 153,434,065.79/13,162.37
  6. Step 6: Final answer
    x = 11,657.03

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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.