Home / 30,185.04-45,279.60-7,998.16

Finding the Fourth Proportional to 30,185.04, 45,279.60 and 7,998.16

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Solution

The fourth proportional to 30,185.04, 45,279.60 and 7,998.16 is: 11,997.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,185.04 : 45,279.60 = 7,998.16 : x
  2. Step 2: Convert to fraction form
    30,185.04/45,279.60 = 7,998.16/x
  3. Step 3: Cross multiply
    30,185.04x = 45,279.60 × 7,998.16
  4. Step 4: Simplify right side
    30,185.04x = 362,153,485.54
  5. Step 5: Solve for x
    x = 362,153,485.54/30,185.04
  6. Step 6: Final answer
    x = 11,997.78

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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.