Home / 20,269.34-30,383.34-11,485.70

Finding the Fourth Proportional to 20,269.34, 30,383.34 and 11,485.70

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Solution

The fourth proportional to 20,269.34, 30,383.34 and 11,485.70 is: 17,216.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.34 : 30,383.34 = 11,485.70 : x
  2. Step 2: Convert to fraction form
    20,269.34/30,383.34 = 11,485.70/x
  3. Step 3: Cross multiply
    20,269.34x = 30,383.34 × 11,485.70
  4. Step 4: Simplify right side
    20,269.34x = 348,973,928.24
  5. Step 5: Solve for x
    x = 348,973,928.24/20,269.34
  6. Step 6: Final answer
    x = 17,216.84

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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.