Home / 28,187.44-38,889.78-16,249.12

Finding the Fourth Proportional to 28,187.44, 38,889.78 and 16,249.12

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Solution

The fourth proportional to 28,187.44, 38,889.78 and 16,249.12 is: 22,418.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.44 : 38,889.78 = 16,249.12 : x
  2. Step 2: Convert to fraction form
    28,187.44/38,889.78 = 16,249.12/x
  3. Step 3: Cross multiply
    28,187.44x = 38,889.78 × 16,249.12
  4. Step 4: Simplify right side
    28,187.44x = 631,924,701.99
  5. Step 5: Solve for x
    x = 631,924,701.99/28,187.44
  6. Step 6: Final answer
    x = 22,418.66

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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.