Home / 13,626.72-18,813.48-8,918.96

Finding the Fourth Proportional to 13,626.72, 18,813.48 and 8,918.96

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Solution

The fourth proportional to 13,626.72, 18,813.48 and 8,918.96 is: 12,313.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.72 : 18,813.48 = 8,918.96 : x
  2. Step 2: Convert to fraction form
    13,626.72/18,813.48 = 8,918.96/x
  3. Step 3: Cross multiply
    13,626.72x = 18,813.48 × 8,918.96
  4. Step 4: Simplify right side
    13,626.72x = 167,796,675.58
  5. Step 5: Solve for x
    x = 167,796,675.58/13,626.72
  6. Step 6: Final answer
    x = 12,313.80

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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.