Home / 12,853.56-19,281-3,620.28

Finding the Fourth Proportional to 12,853.56, 19,281 and 3,620.28

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Solution

The fourth proportional to 12,853.56, 19,281 and 3,620.28 is: 5,430.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,853.56 : 19,281 = 3,620.28 : x
  2. Step 2: Convert to fraction form
    12,853.56/19,281 = 3,620.28/x
  3. Step 3: Cross multiply
    12,853.56x = 19,281 × 3,620.28
  4. Step 4: Simplify right side
    12,853.56x = 69,802,618.68
  5. Step 5: Solve for x
    x = 69,802,618.68/12,853.56
  6. Step 6: Final answer
    x = 5,430.61

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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.