Home / 19,166.40-28,749.60-11,390.40

Finding the Fourth Proportional to 19,166.40, 28,749.60 and 11,390.40

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Solution

The fourth proportional to 19,166.40, 28,749.60 and 11,390.40 is: 17,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,166.40 : 28,749.60 = 11,390.40 : x
  2. Step 2: Convert to fraction form
    19,166.40/28,749.60 = 11,390.40/x
  3. Step 3: Cross multiply
    19,166.40x = 28,749.60 × 11,390.40
  4. Step 4: Simplify right side
    19,166.40x = 327,469,443.84
  5. Step 5: Solve for x
    x = 327,469,443.84/19,166.40
  6. Step 6: Final answer
    x = 17,085.60

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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.