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Finding the Fourth Proportional to 14,617.28, 21,945.35 and 7,696.64

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Solution

The fourth proportional to 14,617.28, 21,945.35 and 7,696.64 is: 11,555.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,617.28 : 21,945.35 = 7,696.64 : x
  2. Step 2: Convert to fraction form
    14,617.28/21,945.35 = 7,696.64/x
  3. Step 3: Cross multiply
    14,617.28x = 21,945.35 × 7,696.64
  4. Step 4: Simplify right side
    14,617.28x = 168,905,458.62
  5. Step 5: Solve for x
    x = 168,905,458.62/14,617.28
  6. Step 6: Final answer
    x = 11,555.19

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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.