Home / 20,415.40-30,623.10-7,282.60

Finding the Fourth Proportional to 20,415.40, 30,623.10 and 7,282.60

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Solution

The fourth proportional to 20,415.40, 30,623.10 and 7,282.60 is: 10,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.40 : 30,623.10 = 7,282.60 : x
  2. Step 2: Convert to fraction form
    20,415.40/30,623.10 = 7,282.60/x
  3. Step 3: Cross multiply
    20,415.40x = 30,623.10 × 7,282.60
  4. Step 4: Simplify right side
    20,415.40x = 223,015,788.06
  5. Step 5: Solve for x
    x = 223,015,788.06/20,415.40
  6. Step 6: Final answer
    x = 10,923.90

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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.