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Finding the Fourth Proportional to 15,026.50, 20,736.46 and 8,979.49

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Solution

The fourth proportional to 15,026.50, 20,736.46 and 8,979.49 is: 12,391.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,026.50 : 20,736.46 = 8,979.49 : x
  2. Step 2: Convert to fraction form
    15,026.50/20,736.46 = 8,979.49/x
  3. Step 3: Cross multiply
    15,026.50x = 20,736.46 × 8,979.49
  4. Step 4: Simplify right side
    15,026.50x = 186,202,821.84
  5. Step 5: Solve for x
    x = 186,202,821.84/15,026.50
  6. Step 6: Final answer
    x = 12,391.63

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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.