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Finding the Fourth Proportional to 9,445.21, 14,167.81 and 9,431.54

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Solution

The fourth proportional to 9,445.21, 14,167.81 and 9,431.54 is: 14,147.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,445.21 : 14,167.81 = 9,431.54 : x
  2. Step 2: Convert to fraction form
    9,445.21/14,167.81 = 9,431.54/x
  3. Step 3: Cross multiply
    9,445.21x = 14,167.81 × 9,431.54
  4. Step 4: Simplify right side
    9,445.21x = 133,624,260.81
  5. Step 5: Solve for x
    x = 133,624,260.81/9,445.21
  6. Step 6: Final answer
    x = 14,147.31

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Double scale
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Similar ratio
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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.