Home / 28,113.15-38,789.75-16,786.31

Finding the Fourth Proportional to 28,113.15, 38,789.75 and 16,786.31

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Solution

The fourth proportional to 28,113.15, 38,789.75 and 16,786.31 is: 23,161.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.15 : 38,789.75 = 16,786.31 : x
  2. Step 2: Convert to fraction form
    28,113.15/38,789.75 = 16,786.31/x
  3. Step 3: Cross multiply
    28,113.15x = 38,789.75 × 16,786.31
  4. Step 4: Simplify right side
    28,113.15x = 651,136,907.26
  5. Step 5: Solve for x
    x = 651,136,907.26/28,113.15
  6. Step 6: Final answer
    x = 23,161.29

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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.