Home / 20,439.56-30,642.80-6,392.36

Finding the Fourth Proportional to 20,439.56, 30,642.80 and 6,392.36

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Solution

The fourth proportional to 20,439.56, 30,642.80 and 6,392.36 is: 9,583.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,439.56 : 30,642.80 = 6,392.36 : x
  2. Step 2: Convert to fraction form
    20,439.56/30,642.80 = 6,392.36/x
  3. Step 3: Cross multiply
    20,439.56x = 30,642.80 × 6,392.36
  4. Step 4: Simplify right side
    20,439.56x = 195,879,853.65
  5. Step 5: Solve for x
    x = 195,879,853.65/20,439.56
  6. Step 6: Final answer
    x = 9,583.37

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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.