Home / 20,057.32-27,680.66-11,105.66

Finding the Fourth Proportional to 20,057.32, 27,680.66 and 11,105.66

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Solution

The fourth proportional to 20,057.32, 27,680.66 and 11,105.66 is: 15,326.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.32 : 27,680.66 = 11,105.66 : x
  2. Step 2: Convert to fraction form
    20,057.32/27,680.66 = 11,105.66/x
  3. Step 3: Cross multiply
    20,057.32x = 27,680.66 × 11,105.66
  4. Step 4: Simplify right side
    20,057.32x = 307,411,929.39
  5. Step 5: Solve for x
    x = 307,411,929.39/20,057.32
  6. Step 6: Final answer
    x = 15,326.67

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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.