Home / 20,313.55-28,040.39-18,185.23

Finding the Fourth Proportional to 20,313.55, 28,040.39 and 18,185.23

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Solution

The fourth proportional to 20,313.55, 28,040.39 and 18,185.23 is: 25,102.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.55 : 28,040.39 = 18,185.23 : x
  2. Step 2: Convert to fraction form
    20,313.55/28,040.39 = 18,185.23/x
  3. Step 3: Cross multiply
    20,313.55x = 28,040.39 × 18,185.23
  4. Step 4: Simplify right side
    20,313.55x = 509,920,941.44
  5. Step 5: Solve for x
    x = 509,920,941.44/20,313.55
  6. Step 6: Final answer
    x = 25,102.50

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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.