Home / 18,815.31-28,212.89-6,331.19

Finding the Fourth Proportional to 18,815.31, 28,212.89 and 6,331.19

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Solution

The fourth proportional to 18,815.31, 28,212.89 and 6,331.19 is: 9,493.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.31 : 28,212.89 = 6,331.19 : x
  2. Step 2: Convert to fraction form
    18,815.31/28,212.89 = 6,331.19/x
  3. Step 3: Cross multiply
    18,815.31x = 28,212.89 × 6,331.19
  4. Step 4: Simplify right side
    18,815.31x = 178,620,994.32
  5. Step 5: Solve for x
    x = 178,620,994.32/18,815.31
  6. Step 6: Final answer
    x = 9,493.39

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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.