Home / 28,171.81-38,874.40-16,839.06

Finding the Fourth Proportional to 28,171.81, 38,874.40 and 16,839.06

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Solution

The fourth proportional to 28,171.81, 38,874.40 and 16,839.06 is: 23,236.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171.81 : 38,874.40 = 16,839.06 : x
  2. Step 2: Convert to fraction form
    28,171.81/38,874.40 = 16,839.06/x
  3. Step 3: Cross multiply
    28,171.81x = 38,874.40 × 16,839.06
  4. Step 4: Simplify right side
    28,171.81x = 654,608,354.06
  5. Step 5: Solve for x
    x = 654,608,354.06/28,171.81
  6. Step 6: Final answer
    x = 23,236.29

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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.