Home / 23,138.90-34,708.47-7,128.25

Finding the Fourth Proportional to 23,138.90, 34,708.47 and 7,128.25

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Solution

The fourth proportional to 23,138.90, 34,708.47 and 7,128.25 is: 10,692.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,138.90 : 34,708.47 = 7,128.25 : x
  2. Step 2: Convert to fraction form
    23,138.90/34,708.47 = 7,128.25/x
  3. Step 3: Cross multiply
    23,138.90x = 34,708.47 × 7,128.25
  4. Step 4: Simplify right side
    23,138.90x = 247,410,537.78
  5. Step 5: Solve for x
    x = 247,410,537.78/23,138.90
  6. Step 6: Final answer
    x = 10,692.41

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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.