Home / 20,213.18-27,895.05-11,260.67

Finding the Fourth Proportional to 20,213.18, 27,895.05 and 11,260.67

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Solution

The fourth proportional to 20,213.18, 27,895.05 and 11,260.67 is: 15,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.18 : 27,895.05 = 11,260.67 : x
  2. Step 2: Convert to fraction form
    20,213.18/27,895.05 = 11,260.67/x
  3. Step 3: Cross multiply
    20,213.18x = 27,895.05 × 11,260.67
  4. Step 4: Simplify right side
    20,213.18x = 314,116,813.21
  5. Step 5: Solve for x
    x = 314,116,813.21/20,213.18
  6. Step 6: Final answer
    x = 15,540.20

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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.