Home / 20,317.98-28,039.54-11,365.44

Finding the Fourth Proportional to 20,317.98, 28,039.54 and 11,365.44

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Solution

The fourth proportional to 20,317.98, 28,039.54 and 11,365.44 is: 15,684.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.98 : 28,039.54 = 11,365.44 : x
  2. Step 2: Convert to fraction form
    20,317.98/28,039.54 = 11,365.44/x
  3. Step 3: Cross multiply
    20,317.98x = 28,039.54 × 11,365.44
  4. Step 4: Simplify right side
    20,317.98x = 318,681,709.50
  5. Step 5: Solve for x
    x = 318,681,709.50/20,317.98
  6. Step 6: Final answer
    x = 15,684.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.