Home / 12,971.22-19,457.14-4,651.80

Finding the Fourth Proportional to 12,971.22, 19,457.14 and 4,651.80

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Solution

The fourth proportional to 12,971.22, 19,457.14 and 4,651.80 is: 6,977.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,971.22 : 19,457.14 = 4,651.80 : x
  2. Step 2: Convert to fraction form
    12,971.22/19,457.14 = 4,651.80/x
  3. Step 3: Cross multiply
    12,971.22x = 19,457.14 × 4,651.80
  4. Step 4: Simplify right side
    12,971.22x = 90,510,723.85
  5. Step 5: Solve for x
    x = 90,510,723.85/12,971.22
  6. Step 6: Final answer
    x = 6,977.81

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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.