Home / 28,079.46-42,107.55-11,428.19

Finding the Fourth Proportional to 28,079.46, 42,107.55 and 11,428.19

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Solution

The fourth proportional to 28,079.46, 42,107.55 and 11,428.19 is: 17,137.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.46 : 42,107.55 = 11,428.19 : x
  2. Step 2: Convert to fraction form
    28,079.46/42,107.55 = 11,428.19/x
  3. Step 3: Cross multiply
    28,079.46x = 42,107.55 × 11,428.19
  4. Step 4: Simplify right side
    28,079.46x = 481,212,986.34
  5. Step 5: Solve for x
    x = 481,212,986.34/28,079.46
  6. Step 6: Final answer
    x = 17,137.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.