Home / 13,749.35-20,673.83-12,666.78

Finding the Fourth Proportional to 13,749.35, 20,673.83 and 12,666.78

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Solution

The fourth proportional to 13,749.35, 20,673.83 and 12,666.78 is: 19,046.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.35 : 20,673.83 = 12,666.78 : x
  2. Step 2: Convert to fraction form
    13,749.35/20,673.83 = 12,666.78/x
  3. Step 3: Cross multiply
    13,749.35x = 20,673.83 × 12,666.78
  4. Step 4: Simplify right side
    13,749.35x = 261,870,888.03
  5. Step 5: Solve for x
    x = 261,870,888.03/13,749.35
  6. Step 6: Final answer
    x = 19,046.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.