Home / 20,443.55-30,665.33-6,403.70

Finding the Fourth Proportional to 20,443.55, 30,665.33 and 6,403.70

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Solution

The fourth proportional to 20,443.55, 30,665.33 and 6,403.70 is: 9,605.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,443.55 : 30,665.33 = 6,403.70 : x
  2. Step 2: Convert to fraction form
    20,443.55/30,665.33 = 6,403.70/x
  3. Step 3: Cross multiply
    20,443.55x = 30,665.33 × 6,403.70
  4. Step 4: Simplify right side
    20,443.55x = 196,371,388.38
  5. Step 5: Solve for x
    x = 196,371,388.38/20,443.55
  6. Step 6: Final answer
    x = 9,605.54

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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.