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Finding the Fourth Proportional to 20,653.99, 30,973.08 and 6,611.02

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Solution

The fourth proportional to 20,653.99, 30,973.08 and 6,611.02 is: 9,914.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653.99 : 30,973.08 = 6,611.02 : x
  2. Step 2: Convert to fraction form
    20,653.99/30,973.08 = 6,611.02/x
  3. Step 3: Cross multiply
    20,653.99x = 30,973.08 × 6,611.02
  4. Step 4: Simplify right side
    20,653.99x = 204,763,598.70
  5. Step 5: Solve for x
    x = 204,763,598.70/20,653.99
  6. Step 6: Final answer
    x = 9,914.00

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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.