Home / 28,479.80-39,300.17-17,147.09

Finding the Fourth Proportional to 28,479.80, 39,300.17 and 17,147.09

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Solution

The fourth proportional to 28,479.80, 39,300.17 and 17,147.09 is: 23,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.80 : 39,300.17 = 17,147.09 : x
  2. Step 2: Convert to fraction form
    28,479.80/39,300.17 = 17,147.09/x
  3. Step 3: Cross multiply
    28,479.80x = 39,300.17 × 17,147.09
  4. Step 4: Simplify right side
    28,479.80x = 673,883,269.77
  5. Step 5: Solve for x
    x = 673,883,269.77/28,479.80
  6. Step 6: Final answer
    x = 23,661.80

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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.