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Finding the Fourth Proportional to 18,691.56, 25,792.83 and 10,308.06

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Solution

The fourth proportional to 18,691.56, 25,792.83 and 10,308.06 is: 14,224.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.56 : 25,792.83 = 10,308.06 : x
  2. Step 2: Convert to fraction form
    18,691.56/25,792.83 = 10,308.06/x
  3. Step 3: Cross multiply
    18,691.56x = 25,792.83 × 10,308.06
  4. Step 4: Simplify right side
    18,691.56x = 265,874,039.21
  5. Step 5: Solve for x
    x = 265,874,039.21/18,691.56
  6. Step 6: Final answer
    x = 14,224.28

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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.