Home / 20,861.92-31,271.01-9,759.25

Finding the Fourth Proportional to 20,861.92, 31,271.01 and 9,759.25

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Solution

The fourth proportional to 20,861.92, 31,271.01 and 9,759.25 is: 14,628.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.92 : 31,271.01 = 9,759.25 : x
  2. Step 2: Convert to fraction form
    20,861.92/31,271.01 = 9,759.25/x
  3. Step 3: Cross multiply
    20,861.92x = 31,271.01 × 9,759.25
  4. Step 4: Simplify right side
    20,861.92x = 305,181,604.34
  5. Step 5: Solve for x
    x = 305,181,604.34/20,861.92
  6. Step 6: Final answer
    x = 14,628.64

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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.