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Finding the Fourth Proportional to 28,453.85, 42,659.67 and 13,648.67

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Solution

The fourth proportional to 28,453.85, 42,659.67 and 13,648.67 is: 20,462.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.85 : 42,659.67 = 13,648.67 : x
  2. Step 2: Convert to fraction form
    28,453.85/42,659.67 = 13,648.67/x
  3. Step 3: Cross multiply
    28,453.85x = 42,659.67 × 13,648.67
  4. Step 4: Simplify right side
    28,453.85x = 582,247,544.84
  5. Step 5: Solve for x
    x = 582,247,544.84/28,453.85
  6. Step 6: Final answer
    x = 20,462.88

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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.