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Finding the Fourth Proportional to 16,640.16, 22,958.48 and 10,661.28

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Solution

The fourth proportional to 16,640.16, 22,958.48 and 10,661.28 is: 14,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,640.16 : 22,958.48 = 10,661.28 : x
  2. Step 2: Convert to fraction form
    16,640.16/22,958.48 = 10,661.28/x
  3. Step 3: Cross multiply
    16,640.16x = 22,958.48 × 10,661.28
  4. Step 4: Simplify right side
    16,640.16x = 244,766,783.65
  5. Step 5: Solve for x
    x = 244,766,783.65/16,640.16
  6. Step 6: Final answer
    x = 14,709.40

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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.