Home / 20,211.73-30,289.34-9,114.53

Finding the Fourth Proportional to 20,211.73, 30,289.34 and 9,114.53

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Solution

The fourth proportional to 20,211.73, 30,289.34 and 9,114.53 is: 13,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,211.73 : 30,289.34 = 9,114.53 : x
  2. Step 2: Convert to fraction form
    20,211.73/30,289.34 = 9,114.53/x
  3. Step 3: Cross multiply
    20,211.73x = 30,289.34 × 9,114.53
  4. Step 4: Simplify right side
    20,211.73x = 276,072,969.45
  5. Step 5: Solve for x
    x = 276,072,969.45/20,211.73
  6. Step 6: Final answer
    x = 13,659.05

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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.