Home / 47,704.20-71,556.30-12,647.40

Finding the Fourth Proportional to 47,704.20, 71,556.30 and 12,647.40

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Solution

The fourth proportional to 47,704.20, 71,556.30 and 12,647.40 is: 18,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,704.20 : 71,556.30 = 12,647.40 : x
  2. Step 2: Convert to fraction form
    47,704.20/71,556.30 = 12,647.40/x
  3. Step 3: Cross multiply
    47,704.20x = 71,556.30 × 12,647.40
  4. Step 4: Simplify right side
    47,704.20x = 905,001,148.62
  5. Step 5: Solve for x
    x = 905,001,148.62/47,704.20
  6. Step 6: Final answer
    x = 18,971.10

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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.