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Finding the Fourth Proportional to 34,392.54, 47,460.72 and 20,958.89

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Solution

The fourth proportional to 34,392.54, 47,460.72 and 20,958.89 is: 28,922.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,392.54 : 47,460.72 = 20,958.89 : x
  2. Step 2: Convert to fraction form
    34,392.54/47,460.72 = 20,958.89/x
  3. Step 3: Cross multiply
    34,392.54x = 47,460.72 × 20,958.89
  4. Step 4: Simplify right side
    34,392.54x = 994,723,905.01
  5. Step 5: Solve for x
    x = 994,723,905.01/34,392.54
  6. Step 6: Final answer
    x = 28,922.67

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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.