Home / 20,362.25-28,101.57-11,980.37

Finding the Fourth Proportional to 20,362.25, 28,101.57 and 11,980.37

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Solution

The fourth proportional to 20,362.25, 28,101.57 and 11,980.37 is: 16,533.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.25 : 28,101.57 = 11,980.37 : x
  2. Step 2: Convert to fraction form
    20,362.25/28,101.57 = 11,980.37/x
  3. Step 3: Cross multiply
    20,362.25x = 28,101.57 × 11,980.37
  4. Step 4: Simplify right side
    20,362.25x = 336,667,206.18
  5. Step 5: Solve for x
    x = 336,667,206.18/20,362.25
  6. Step 6: Final answer
    x = 16,533.89

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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.