Home / 28,771.51-43,139.99-11,249.59

Finding the Fourth Proportional to 28,771.51, 43,139.99 and 11,249.59

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Solution

The fourth proportional to 28,771.51, 43,139.99 and 11,249.59 is: 16,867.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,771.51 : 43,139.99 = 11,249.59 : x
  2. Step 2: Convert to fraction form
    28,771.51/43,139.99 = 11,249.59/x
  3. Step 3: Cross multiply
    28,771.51x = 43,139.99 × 11,249.59
  4. Step 4: Simplify right side
    28,771.51x = 485,307,143.86
  5. Step 5: Solve for x
    x = 485,307,143.86/28,771.51
  6. Step 6: Final answer
    x = 16,867.63

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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.