Home / 28,928.22-39,920.28-16,181.58

Finding the Fourth Proportional to 28,928.22, 39,920.28 and 16,181.58

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Solution

The fourth proportional to 28,928.22, 39,920.28 and 16,181.58 is: 22,330.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,928.22 : 39,920.28 = 16,181.58 : x
  2. Step 2: Convert to fraction form
    28,928.22/39,920.28 = 16,181.58/x
  3. Step 3: Cross multiply
    28,928.22x = 39,920.28 × 16,181.58
  4. Step 4: Simplify right side
    28,928.22x = 645,973,204.44
  5. Step 5: Solve for x
    x = 645,973,204.44/28,928.22
  6. Step 6: Final answer
    x = 22,330.21

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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.