Home / 28,109.88-38,778.48-18,033.48

Finding the Fourth Proportional to 28,109.88, 38,778.48 and 18,033.48

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Solution

The fourth proportional to 28,109.88, 38,778.48 and 18,033.48 is: 24,877.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.88 : 38,778.48 = 18,033.48 : x
  2. Step 2: Convert to fraction form
    28,109.88/38,778.48 = 18,033.48/x
  3. Step 3: Cross multiply
    28,109.88x = 38,778.48 × 18,033.48
  4. Step 4: Simplify right side
    28,109.88x = 699,310,943.51
  5. Step 5: Solve for x
    x = 699,310,943.51/28,109.88
  6. Step 6: Final answer
    x = 24,877.76

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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.