Home / 20,379.60-30,573.80-6,339.36

Finding the Fourth Proportional to 20,379.60, 30,573.80 and 6,339.36

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Solution

The fourth proportional to 20,379.60, 30,573.80 and 6,339.36 is: 9,510.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379.60 : 30,573.80 = 6,339.36 : x
  2. Step 2: Convert to fraction form
    20,379.60/30,573.80 = 6,339.36/x
  3. Step 3: Cross multiply
    20,379.60x = 30,573.80 × 6,339.36
  4. Step 4: Simplify right side
    20,379.60x = 193,818,324.77
  5. Step 5: Solve for x
    x = 193,818,324.77/20,379.60
  6. Step 6: Final answer
    x = 9,510.41

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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.