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Finding the Fourth Proportional to 20,606.91, 28,410.04 and 16,372.02

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Solution

The fourth proportional to 20,606.91, 28,410.04 and 16,372.02 is: 22,571.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,606.91 : 28,410.04 = 16,372.02 : x
  2. Step 2: Convert to fraction form
    20,606.91/28,410.04 = 16,372.02/x
  3. Step 3: Cross multiply
    20,606.91x = 28,410.04 × 16,372.02
  4. Step 4: Simplify right side
    20,606.91x = 465,129,870.08
  5. Step 5: Solve for x
    x = 465,129,870.08/20,606.91
  6. Step 6: Final answer
    x = 22,571.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.