Home / 20,223.96-30,445.14-18,189.54

Finding the Fourth Proportional to 20,223.96, 30,445.14 and 18,189.54

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Solution

The fourth proportional to 20,223.96, 30,445.14 and 18,189.54 is: 27,382.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.96 : 30,445.14 = 18,189.54 : x
  2. Step 2: Convert to fraction form
    20,223.96/30,445.14 = 18,189.54/x
  3. Step 3: Cross multiply
    20,223.96x = 30,445.14 × 18,189.54
  4. Step 4: Simplify right side
    20,223.96x = 553,783,091.84
  5. Step 5: Solve for x
    x = 553,783,091.84/20,223.96
  6. Step 6: Final answer
    x = 27,382.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.