Home / 18,827.18-28,249.97-13,315.94

Finding the Fourth Proportional to 18,827.18, 28,249.97 and 13,315.94

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Solution

The fourth proportional to 18,827.18, 28,249.97 and 13,315.94 is: 19,980.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,827.18 : 28,249.97 = 13,315.94 : x
  2. Step 2: Convert to fraction form
    18,827.18/28,249.97 = 13,315.94/x
  3. Step 3: Cross multiply
    18,827.18x = 28,249.97 × 13,315.94
  4. Step 4: Simplify right side
    18,827.18x = 376,174,962.54
  5. Step 5: Solve for x
    x = 376,174,962.54/18,827.18
  6. Step 6: Final answer
    x = 19,980.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.