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Finding the Fourth Proportional to 20,616.58, 30,937.04 and 8,772.77

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Solution

The fourth proportional to 20,616.58, 30,937.04 and 8,772.77 is: 13,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.58 : 30,937.04 = 8,772.77 : x
  2. Step 2: Convert to fraction form
    20,616.58/30,937.04 = 8,772.77/x
  3. Step 3: Cross multiply
    20,616.58x = 30,937.04 × 8,772.77
  4. Step 4: Simplify right side
    20,616.58x = 271,403,654.16
  5. Step 5: Solve for x
    x = 271,403,654.16/20,616.58
  6. Step 6: Final answer
    x = 13,164.34

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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.