Home / 28,100.81-38,775.80-16,768.21

Finding the Fourth Proportional to 28,100.81, 38,775.80 and 16,768.21

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Solution

The fourth proportional to 28,100.81, 38,775.80 and 16,768.21 is: 23,138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.81 : 38,775.80 = 16,768.21 : x
  2. Step 2: Convert to fraction form
    28,100.81/38,775.80 = 16,768.21/x
  3. Step 3: Cross multiply
    28,100.81x = 38,775.80 × 16,768.21
  4. Step 4: Simplify right side
    28,100.81x = 650,200,563.44
  5. Step 5: Solve for x
    x = 650,200,563.44/28,100.81
  6. Step 6: Final answer
    x = 23,138.14

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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.