Home / 20,284.40-30,426.61-13,270.31

Finding the Fourth Proportional to 20,284.40, 30,426.61 and 13,270.31

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Solution

The fourth proportional to 20,284.40, 30,426.61 and 13,270.31 is: 19,905.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.40 : 30,426.61 = 13,270.31 : x
  2. Step 2: Convert to fraction form
    20,284.40/30,426.61 = 13,270.31/x
  3. Step 3: Cross multiply
    20,284.40x = 30,426.61 × 13,270.31
  4. Step 4: Simplify right side
    20,284.40x = 403,770,452.37
  5. Step 5: Solve for x
    x = 403,770,452.37/20,284.40
  6. Step 6: Final answer
    x = 19,905.47

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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.