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Finding the Fourth Proportional to 20,606.84, 30,909.92 and 6,566.68

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Solution

The fourth proportional to 20,606.84, 30,909.92 and 6,566.68 is: 9,849.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.84 : 30,909.92 = 6,566.68 : x
  2. Step 2: Convert to fraction form
    20,606.84/30,909.92 = 6,566.68/x
  3. Step 3: Cross multiply
    20,606.84x = 30,909.92 × 6,566.68
  4. Step 4: Simplify right side
    20,606.84x = 202,975,509.27
  5. Step 5: Solve for x
    x = 202,975,509.27/20,606.84
  6. Step 6: Final answer
    x = 9,849.91

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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.