Home / 20,260.68-30,390.66-6,409.68

Finding the Fourth Proportional to 20,260.68, 30,390.66 and 6,409.68

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Solution

The fourth proportional to 20,260.68, 30,390.66 and 6,409.68 is: 9,614.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.68 : 30,390.66 = 6,409.68 : x
  2. Step 2: Convert to fraction form
    20,260.68/30,390.66 = 6,409.68/x
  3. Step 3: Cross multiply
    20,260.68x = 30,390.66 × 6,409.68
  4. Step 4: Simplify right side
    20,260.68x = 194,794,405.59
  5. Step 5: Solve for x
    x = 194,794,405.59/20,260.68
  6. Step 6: Final answer
    x = 9,614.41

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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.