Home / 20,245.40-27,938.70-11,292.67

Finding the Fourth Proportional to 20,245.40, 27,938.70 and 11,292.67

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Solution

The fourth proportional to 20,245.40, 27,938.70 and 11,292.67 is: 15,583.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.40 : 27,938.70 = 11,292.67 : x
  2. Step 2: Convert to fraction form
    20,245.40/27,938.70 = 11,292.67/x
  3. Step 3: Cross multiply
    20,245.40x = 27,938.70 × 11,292.67
  4. Step 4: Simplify right side
    20,245.40x = 315,502,519.33
  5. Step 5: Solve for x
    x = 315,502,519.33/20,245.40
  6. Step 6: Final answer
    x = 15,583.91

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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.