Home / 28,212.89-38,906.91-16,880.58

Finding the Fourth Proportional to 28,212.89, 38,906.91 and 16,880.58

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Solution

The fourth proportional to 28,212.89, 38,906.91 and 16,880.58 is: 23,279.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.89 : 38,906.91 = 16,880.58 : x
  2. Step 2: Convert to fraction form
    28,212.89/38,906.91 = 16,880.58/x
  3. Step 3: Cross multiply
    28,212.89x = 38,906.91 × 16,880.58
  4. Step 4: Simplify right side
    28,212.89x = 656,771,206.81
  5. Step 5: Solve for x
    x = 656,771,206.81/28,212.89
  6. Step 6: Final answer
    x = 23,279.12

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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.