Home / 47,712.12-71,560.89-12,651.48

Finding the Fourth Proportional to 47,712.12, 71,560.89 and 12,651.48

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Solution

The fourth proportional to 47,712.12, 71,560.89 and 12,651.48 is: 18,975.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,712.12 : 71,560.89 = 12,651.48 : x
  2. Step 2: Convert to fraction form
    47,712.12/71,560.89 = 12,651.48/x
  3. Step 3: Cross multiply
    47,712.12x = 71,560.89 × 12,651.48
  4. Step 4: Simplify right side
    47,712.12x = 905,351,168.62
  5. Step 5: Solve for x
    x = 905,351,168.62/47,712.12
  6. Step 6: Final answer
    x = 18,975.29

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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.