Home / 20,828.34-28,745.46-11,878.08

Finding the Fourth Proportional to 20,828.34, 28,745.46 and 11,878.08

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Solution

The fourth proportional to 20,828.34, 28,745.46 and 11,878.08 is: 16,393.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.34 : 28,745.46 = 11,878.08 : x
  2. Step 2: Convert to fraction form
    20,828.34/28,745.46 = 11,878.08/x
  3. Step 3: Cross multiply
    20,828.34x = 28,745.46 × 11,878.08
  4. Step 4: Simplify right side
    20,828.34x = 341,440,873.52
  5. Step 5: Solve for x
    x = 341,440,873.52/20,828.34
  6. Step 6: Final answer
    x = 16,393.09

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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.