Home / 28,798.62-39,739.23-21,249.06

Finding the Fourth Proportional to 28,798.62, 39,739.23 and 21,249.06

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Solution

The fourth proportional to 28,798.62, 39,739.23 and 21,249.06 is: 29,321.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,798.62 : 39,739.23 = 21,249.06 : x
  2. Step 2: Convert to fraction form
    28,798.62/39,739.23 = 21,249.06/x
  3. Step 3: Cross multiply
    28,798.62x = 39,739.23 × 21,249.06
  4. Step 4: Simplify right side
    28,798.62x = 844,421,282.62
  5. Step 5: Solve for x
    x = 844,421,282.62/28,798.62
  6. Step 6: Final answer
    x = 29,321.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.