Home / 13,558.14-18,708.99-8,453.22

Finding the Fourth Proportional to 13,558.14, 18,708.99 and 8,453.22

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Solution

The fourth proportional to 13,558.14, 18,708.99 and 8,453.22 is: 11,664.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.14 : 18,708.99 = 8,453.22 : x
  2. Step 2: Convert to fraction form
    13,558.14/18,708.99 = 8,453.22/x
  3. Step 3: Cross multiply
    13,558.14x = 18,708.99 × 8,453.22
  4. Step 4: Simplify right side
    13,558.14x = 158,151,208.45
  5. Step 5: Solve for x
    x = 158,151,208.45/13,558.14
  6. Step 6: Final answer
    x = 11,664.67

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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.