Home / 28,400.92-39,181.74-18,845.32

Finding the Fourth Proportional to 28,400.92, 39,181.74 and 18,845.32

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Solution

The fourth proportional to 28,400.92, 39,181.74 and 18,845.32 is: 25,998.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,400.92 : 39,181.74 = 18,845.32 : x
  2. Step 2: Convert to fraction form
    28,400.92/39,181.74 = 18,845.32/x
  3. Step 3: Cross multiply
    28,400.92x = 39,181.74 × 18,845.32
  4. Step 4: Simplify right side
    28,400.92x = 738,392,428.46
  5. Step 5: Solve for x
    x = 738,392,428.46/28,400.92
  6. Step 6: Final answer
    x = 25,998.89

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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.