Home / 28,725.58-39,642.43-17,388.66

Finding the Fourth Proportional to 28,725.58, 39,642.43 and 17,388.66

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Solution

The fourth proportional to 28,725.58, 39,642.43 and 17,388.66 is: 23,997.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,725.58 : 39,642.43 = 17,388.66 : x
  2. Step 2: Convert to fraction form
    28,725.58/39,642.43 = 17,388.66/x
  3. Step 3: Cross multiply
    28,725.58x = 39,642.43 × 17,388.66
  4. Step 4: Simplify right side
    28,725.58x = 689,328,649.90
  5. Step 5: Solve for x
    x = 689,328,649.90/28,725.58
  6. Step 6: Final answer
    x = 23,997.03

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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.