Home / 28,174.86-38,887.38-18,111.42

Finding the Fourth Proportional to 28,174.86, 38,887.38 and 18,111.42

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Solution

The fourth proportional to 28,174.86, 38,887.38 and 18,111.42 is: 24,997.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,174.86 : 38,887.38 = 18,111.42 : x
  2. Step 2: Convert to fraction form
    28,174.86/38,887.38 = 18,111.42/x
  3. Step 3: Cross multiply
    28,174.86x = 38,887.38 × 18,111.42
  4. Step 4: Simplify right side
    28,174.86x = 704,305,671.88
  5. Step 5: Solve for x
    x = 704,305,671.88/28,174.86
  6. Step 6: Final answer
    x = 24,997.66

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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.