Home / 28,798.65-39,739.41-21,249.18

Finding the Fourth Proportional to 28,798.65, 39,739.41 and 21,249.18

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Solution

The fourth proportional to 28,798.65, 39,739.41 and 21,249.18 is: 29,321.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,798.65 : 39,739.41 = 21,249.18 : x
  2. Step 2: Convert to fraction form
    28,798.65/39,739.41 = 21,249.18/x
  3. Step 3: Cross multiply
    28,798.65x = 39,739.41 × 21,249.18
  4. Step 4: Simplify right side
    28,798.65x = 844,429,876.18
  5. Step 5: Solve for x
    x = 844,429,876.18/28,798.65
  6. Step 6: Final answer
    x = 29,321.86

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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.