Home / 20,158.44-27,820.38-11,207.67

Finding the Fourth Proportional to 20,158.44, 27,820.38 and 11,207.67

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Solution

The fourth proportional to 20,158.44, 27,820.38 and 11,207.67 is: 15,467.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.44 : 27,820.38 = 11,207.67 : x
  2. Step 2: Convert to fraction form
    20,158.44/27,820.38 = 11,207.67/x
  3. Step 3: Cross multiply
    20,158.44x = 27,820.38 × 11,207.67
  4. Step 4: Simplify right side
    20,158.44x = 311,801,638.31
  5. Step 5: Solve for x
    x = 311,801,638.31/20,158.44
  6. Step 6: Final answer
    x = 15,467.55

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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.