Home / 14,010.39-21,015.59-3,480.39

Finding the Fourth Proportional to 14,010.39, 21,015.59 and 3,480.39

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Solution

The fourth proportional to 14,010.39, 21,015.59 and 3,480.39 is: 5,220.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,010.39 : 21,015.59 = 3,480.39 : x
  2. Step 2: Convert to fraction form
    14,010.39/21,015.59 = 3,480.39/x
  3. Step 3: Cross multiply
    14,010.39x = 21,015.59 × 3,480.39
  4. Step 4: Simplify right side
    14,010.39x = 73,142,431.88
  5. Step 5: Solve for x
    x = 73,142,431.88/14,010.39
  6. Step 6: Final answer
    x = 5,220.59

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Half scale
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Double scale
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Similar ratio
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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.