Home / 28,914.12-39,893.46-18,308.28

Finding the Fourth Proportional to 28,914.12, 39,893.46 and 18,308.28

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Solution

The fourth proportional to 28,914.12, 39,893.46 and 18,308.28 is: 25,260.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,914.12 : 39,893.46 = 18,308.28 : x
  2. Step 2: Convert to fraction form
    28,914.12/39,893.46 = 18,308.28/x
  3. Step 3: Cross multiply
    28,914.12x = 39,893.46 × 18,308.28
  4. Step 4: Simplify right side
    28,914.12x = 730,380,635.85
  5. Step 5: Solve for x
    x = 730,380,635.85/28,914.12
  6. Step 6: Final answer
    x = 25,260.34

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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.