Home / 20,431.44-28,185.73-17,478.99

Finding the Fourth Proportional to 20,431.44, 28,185.73 and 17,478.99

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Solution

The fourth proportional to 20,431.44, 28,185.73 and 17,478.99 is: 24,112.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.44 : 28,185.73 = 17,478.99 : x
  2. Step 2: Convert to fraction form
    20,431.44/28,185.73 = 17,478.99/x
  3. Step 3: Cross multiply
    20,431.44x = 28,185.73 × 17,478.99
  4. Step 4: Simplify right side
    20,431.44x = 492,658,092.81
  5. Step 5: Solve for x
    x = 492,658,092.81/20,431.44
  6. Step 6: Final answer
    x = 24,112.74

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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.