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Finding the Fourth Proportional to 20,560.08, 30,659.76 and 20,373.08

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Solution

The fourth proportional to 20,560.08, 30,659.76 and 20,373.08 is: 30,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.08 : 30,659.76 = 20,373.08 : x
  2. Step 2: Convert to fraction form
    20,560.08/30,659.76 = 20,373.08/x
  3. Step 3: Cross multiply
    20,560.08x = 30,659.76 × 20,373.08
  4. Step 4: Simplify right side
    20,560.08x = 624,633,743.26
  5. Step 5: Solve for x
    x = 624,633,743.26/20,560.08
  6. Step 6: Final answer
    x = 30,380.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.