Home / 12,651.15-18,976.79-5,255.62

Finding the Fourth Proportional to 12,651.15, 18,976.79 and 5,255.62

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Solution

The fourth proportional to 12,651.15, 18,976.79 and 5,255.62 is: 7,883.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651.15 : 18,976.79 = 5,255.62 : x
  2. Step 2: Convert to fraction form
    12,651.15/18,976.79 = 5,255.62/x
  3. Step 3: Cross multiply
    12,651.15x = 18,976.79 × 5,255.62
  4. Step 4: Simplify right side
    12,651.15x = 99,734,762.76
  5. Step 5: Solve for x
    x = 99,734,762.76/12,651.15
  6. Step 6: Final answer
    x = 7,883.45

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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.