Home / 28,930.42-39,922.10-16,181.39

Finding the Fourth Proportional to 28,930.42, 39,922.10 and 16,181.39

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Solution

The fourth proportional to 28,930.42, 39,922.10 and 16,181.39 is: 22,329.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,930.42 : 39,922.10 = 16,181.39 : x
  2. Step 2: Convert to fraction form
    28,930.42/39,922.10 = 16,181.39/x
  3. Step 3: Cross multiply
    28,930.42x = 39,922.10 × 16,181.39
  4. Step 4: Simplify right side
    28,930.42x = 645,995,129.07
  5. Step 5: Solve for x
    x = 645,995,129.07/28,930.42
  6. Step 6: Final answer
    x = 22,329.27

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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.