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Finding the Fourth Proportional to 20,653.98, 30,976.08 and 7,325.84

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Solution

The fourth proportional to 20,653.98, 30,976.08 and 7,325.84 is: 10,987.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.98 : 30,976.08 = 7,325.84 : x
  2. Step 2: Convert to fraction form
    20,653.98/30,976.08 = 7,325.84/x
  3. Step 3: Cross multiply
    20,653.98x = 30,976.08 × 7,325.84
  4. Step 4: Simplify right side
    20,653.98x = 226,925,805.91
  5. Step 5: Solve for x
    x = 226,925,805.91/20,653.98
  6. Step 6: Final answer
    x = 10,987.03

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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.