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Finding the Fourth Proportional to 20,612.64, 30,893.04 and 14,780.64

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Solution

The fourth proportional to 20,612.64, 30,893.04 and 14,780.64 is: 22,152.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.64 : 30,893.04 = 14,780.64 : x
  2. Step 2: Convert to fraction form
    20,612.64/30,893.04 = 14,780.64/x
  3. Step 3: Cross multiply
    20,612.64x = 30,893.04 × 14,780.64
  4. Step 4: Simplify right side
    20,612.64x = 456,618,902.75
  5. Step 5: Solve for x
    x = 456,618,902.75/20,612.64
  6. Step 6: Final answer
    x = 22,152.37

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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.