Home / 20,269.98-30,383.87-8,430.21

Finding the Fourth Proportional to 20,269.98, 30,383.87 and 8,430.21

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Solution

The fourth proportional to 20,269.98, 30,383.87 and 8,430.21 is: 12,636.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,269.98 : 30,383.87 = 8,430.21 : x
  2. Step 2: Convert to fraction form
    20,269.98/30,383.87 = 8,430.21/x
  3. Step 3: Cross multiply
    20,269.98x = 30,383.87 × 8,430.21
  4. Step 4: Simplify right side
    20,269.98x = 256,142,362.56
  5. Step 5: Solve for x
    x = 256,142,362.56/20,269.98
  6. Step 6: Final answer
    x = 12,636.54

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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.