Home / 28,169.51-38,900.27-18,115.41

Finding the Fourth Proportional to 28,169.51, 38,900.27 and 18,115.41

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Solution

The fourth proportional to 28,169.51, 38,900.27 and 18,115.41 is: 25,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,169.51 : 38,900.27 = 18,115.41 : x
  2. Step 2: Convert to fraction form
    28,169.51/38,900.27 = 18,115.41/x
  3. Step 3: Cross multiply
    28,169.51x = 38,900.27 × 18,115.41
  4. Step 4: Simplify right side
    28,169.51x = 704,694,101.21
  5. Step 5: Solve for x
    x = 704,694,101.21/28,169.51
  6. Step 6: Final answer
    x = 25,016.20

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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.