Home / 20,450.04-28,220.28-11,498.37

Finding the Fourth Proportional to 20,450.04, 28,220.28 and 11,498.37

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Solution

The fourth proportional to 20,450.04, 28,220.28 and 11,498.37 is: 15,867.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,450.04 : 28,220.28 = 11,498.37 : x
  2. Step 2: Convert to fraction form
    20,450.04/28,220.28 = 11,498.37/x
  3. Step 3: Cross multiply
    20,450.04x = 28,220.28 × 11,498.37
  4. Step 4: Simplify right side
    20,450.04x = 324,487,220.94
  5. Step 5: Solve for x
    x = 324,487,220.94/20,450.04
  6. Step 6: Final answer
    x = 15,867.31

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.