Home / 51,321.36-76,923.68-21,720.72

Finding the Fourth Proportional to 51,321.36, 76,923.68 and 21,720.72

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Solution

The fourth proportional to 51,321.36, 76,923.68 and 21,720.72 is: 32,556.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,321.36 : 76,923.68 = 21,720.72 : x
  2. Step 2: Convert to fraction form
    51,321.36/76,923.68 = 21,720.72/x
  3. Step 3: Cross multiply
    51,321.36x = 76,923.68 × 21,720.72
  4. Step 4: Simplify right side
    51,321.36x = 1,670,837,714.65
  5. Step 5: Solve for x
    x = 1,670,837,714.65/51,321.36
  6. Step 6: Final answer
    x = 32,556.38

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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.