Home / 28,942.84-39,929.70-18,181.39

Finding the Fourth Proportional to 28,942.84, 39,929.70 and 18,181.39

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Solution

The fourth proportional to 28,942.84, 39,929.70 and 18,181.39 is: 25,083.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,942.84 : 39,929.70 = 18,181.39 : x
  2. Step 2: Convert to fraction form
    28,942.84/39,929.70 = 18,181.39/x
  3. Step 3: Cross multiply
    28,942.84x = 39,929.70 × 18,181.39
  4. Step 4: Simplify right side
    28,942.84x = 725,977,448.28
  5. Step 5: Solve for x
    x = 725,977,448.28/28,942.84
  6. Step 6: Final answer
    x = 25,083.14

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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.