Home / 13,628.80-20,443.44-4,394.80

Finding the Fourth Proportional to 13,628.80, 20,443.44 and 4,394.80

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Solution

The fourth proportional to 13,628.80, 20,443.44 and 4,394.80 is: 6,592.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.80 : 20,443.44 = 4,394.80 : x
  2. Step 2: Convert to fraction form
    13,628.80/20,443.44 = 4,394.80/x
  3. Step 3: Cross multiply
    13,628.80x = 20,443.44 × 4,394.80
  4. Step 4: Simplify right side
    13,628.80x = 89,844,830.11
  5. Step 5: Solve for x
    x = 89,844,830.11/13,628.80
  6. Step 6: Final answer
    x = 6,592.28

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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.