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Finding the Fourth Proportional to 18,506.77, 27,759.48 and 8,632.42

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Solution

The fourth proportional to 18,506.77, 27,759.48 and 8,632.42 is: 12,948.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,506.77 : 27,759.48 = 8,632.42 : x
  2. Step 2: Convert to fraction form
    18,506.77/27,759.48 = 8,632.42/x
  3. Step 3: Cross multiply
    18,506.77x = 27,759.48 × 8,632.42
  4. Step 4: Simplify right side
    18,506.77x = 239,631,490.34
  5. Step 5: Solve for x
    x = 239,631,490.34/18,506.77
  6. Step 6: Final answer
    x = 12,948.32

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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.