Home / 28,118.58-38,788.29-18,035.81

Finding the Fourth Proportional to 28,118.58, 38,788.29 and 18,035.81

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Solution

The fourth proportional to 28,118.58, 38,788.29 and 18,035.81 is: 24,879.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.58 : 38,788.29 = 18,035.81 : x
  2. Step 2: Convert to fraction form
    28,118.58/38,788.29 = 18,035.81/x
  3. Step 3: Cross multiply
    28,118.58x = 38,788.29 × 18,035.81
  4. Step 4: Simplify right side
    28,118.58x = 699,578,034.72
  5. Step 5: Solve for x
    x = 699,578,034.72/28,118.58
  6. Step 6: Final answer
    x = 24,879.56

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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.