Home / 20,189.76-30,276.36-11,886.36

Finding the Fourth Proportional to 20,189.76, 30,276.36 and 11,886.36

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Solution

The fourth proportional to 20,189.76, 30,276.36 and 11,886.36 is: 17,824.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.76 : 30,276.36 = 11,886.36 : x
  2. Step 2: Convert to fraction form
    20,189.76/30,276.36 = 11,886.36/x
  3. Step 3: Cross multiply
    20,189.76x = 30,276.36 × 11,886.36
  4. Step 4: Simplify right side
    20,189.76x = 359,875,714.45
  5. Step 5: Solve for x
    x = 359,875,714.45/20,189.76
  6. Step 6: Final answer
    x = 17,824.67

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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.