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Finding the Fourth Proportional to 15,054.73, 20,777.73 and 8,680.07

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Solution

The fourth proportional to 15,054.73, 20,777.73 and 8,680.07 is: 11,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,054.73 : 20,777.73 = 8,680.07 : x
  2. Step 2: Convert to fraction form
    15,054.73/20,777.73 = 8,680.07/x
  3. Step 3: Cross multiply
    15,054.73x = 20,777.73 × 8,680.07
  4. Step 4: Simplify right side
    15,054.73x = 180,352,170.24
  5. Step 5: Solve for x
    x = 180,352,170.24/15,054.73
  6. Step 6: Final answer
    x = 11,979.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.