Home / 13,937.80-20,907.38-5,616.70

Finding the Fourth Proportional to 13,937.80, 20,907.38 and 5,616.70

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Solution

The fourth proportional to 13,937.80, 20,907.38 and 5,616.70 is: 8,425.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,937.80 : 20,907.38 = 5,616.70 : x
  2. Step 2: Convert to fraction form
    13,937.80/20,907.38 = 5,616.70/x
  3. Step 3: Cross multiply
    13,937.80x = 20,907.38 × 5,616.70
  4. Step 4: Simplify right side
    13,937.80x = 117,430,481.25
  5. Step 5: Solve for x
    x = 117,430,481.25/13,937.80
  6. Step 6: Final answer
    x = 8,425.32

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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.