Home / 20,572.26-30,858.39-4,989.75

Finding the Fourth Proportional to 20,572.26, 30,858.39 and 4,989.75

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Solution

The fourth proportional to 20,572.26, 30,858.39 and 4,989.75 is: 7,484.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.26 : 30,858.39 = 4,989.75 : x
  2. Step 2: Convert to fraction form
    20,572.26/30,858.39 = 4,989.75/x
  3. Step 3: Cross multiply
    20,572.26x = 30,858.39 × 4,989.75
  4. Step 4: Simplify right side
    20,572.26x = 153,975,651.50
  5. Step 5: Solve for x
    x = 153,975,651.50/20,572.26
  6. Step 6: Final answer
    x = 7,484.63

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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.