Home / 20,296.86-30,438.81-6,442.62

Finding the Fourth Proportional to 20,296.86, 30,438.81 and 6,442.62

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Solution

The fourth proportional to 20,296.86, 30,438.81 and 6,442.62 is: 9,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.86 : 30,438.81 = 6,442.62 : x
  2. Step 2: Convert to fraction form
    20,296.86/30,438.81 = 6,442.62/x
  3. Step 3: Cross multiply
    20,296.86x = 30,438.81 × 6,442.62
  4. Step 4: Simplify right side
    20,296.86x = 196,105,686.08
  5. Step 5: Solve for x
    x = 196,105,686.08/20,296.86
  6. Step 6: Final answer
    x = 9,661.87

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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.