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Finding the Fourth Proportional to 20,606.94, 30,908.70 and 6,566.40

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Solution

The fourth proportional to 20,606.94, 30,908.70 and 6,566.40 is: 9,849.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.94 : 30,908.70 = 6,566.40 : x
  2. Step 2: Convert to fraction form
    20,606.94/30,908.70 = 6,566.40/x
  3. Step 3: Cross multiply
    20,606.94x = 30,908.70 × 6,566.40
  4. Step 4: Simplify right side
    20,606.94x = 202,958,887.68
  5. Step 5: Solve for x
    x = 202,958,887.68/20,606.94
  6. Step 6: Final answer
    x = 9,849.06

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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.