Home / 20,451.12-30,670.74-7,968.36

Finding the Fourth Proportional to 20,451.12, 30,670.74 and 7,968.36

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Solution

The fourth proportional to 20,451.12, 30,670.74 and 7,968.36 is: 11,950.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.12 : 30,670.74 = 7,968.36 : x
  2. Step 2: Convert to fraction form
    20,451.12/30,670.74 = 7,968.36/x
  3. Step 3: Cross multiply
    20,451.12x = 30,670.74 × 7,968.36
  4. Step 4: Simplify right side
    20,451.12x = 244,395,382.77
  5. Step 5: Solve for x
    x = 244,395,382.77/20,451.12
  6. Step 6: Final answer
    x = 11,950.22

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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.