Home / 20,749.74-28,635.03-11,318.64

Finding the Fourth Proportional to 20,749.74, 28,635.03 and 11,318.64

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Solution

The fourth proportional to 20,749.74, 28,635.03 and 11,318.64 is: 15,619.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.74 : 28,635.03 = 11,318.64 : x
  2. Step 2: Convert to fraction form
    20,749.74/28,635.03 = 11,318.64/x
  3. Step 3: Cross multiply
    20,749.74x = 28,635.03 × 11,318.64
  4. Step 4: Simplify right side
    20,749.74x = 324,109,595.96
  5. Step 5: Solve for x
    x = 324,109,595.96/20,749.74
  6. Step 6: Final answer
    x = 15,619.94

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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.