Home / 20,147.27-30,220.88-6,999.64

Finding the Fourth Proportional to 20,147.27, 30,220.88 and 6,999.64

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Solution

The fourth proportional to 20,147.27, 30,220.88 and 6,999.64 is: 10,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.27 : 30,220.88 = 6,999.64 : x
  2. Step 2: Convert to fraction form
    20,147.27/30,220.88 = 6,999.64/x
  3. Step 3: Cross multiply
    20,147.27x = 30,220.88 × 6,999.64
  4. Step 4: Simplify right side
    20,147.27x = 211,535,169.93
  5. Step 5: Solve for x
    x = 211,535,169.93/20,147.27
  6. Step 6: Final answer
    x = 10,499.45

Related Problems

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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.