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Finding the Fourth Proportional to 20,637.66, 30,956.30 and 5,055.30

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Solution

The fourth proportional to 20,637.66, 30,956.30 and 5,055.30 is: 7,582.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,637.66 : 30,956.30 = 5,055.30 : x
  2. Step 2: Convert to fraction form
    20,637.66/30,956.30 = 5,055.30/x
  3. Step 3: Cross multiply
    20,637.66x = 30,956.30 × 5,055.30
  4. Step 4: Simplify right side
    20,637.66x = 156,493,383.39
  5. Step 5: Solve for x
    x = 156,493,383.39/20,637.66
  6. Step 6: Final answer
    x = 7,582.90

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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.