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Finding the Fourth Proportional to 9,459.80, 14,167.81 and 9,131.75

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Solution

The fourth proportional to 9,459.80, 14,167.81 and 9,131.75 is: 13,676.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,459.80 : 14,167.81 = 9,131.75 : x
  2. Step 2: Convert to fraction form
    9,459.80/14,167.81 = 9,131.75/x
  3. Step 3: Cross multiply
    9,459.80x = 14,167.81 × 9,131.75
  4. Step 4: Simplify right side
    9,459.80x = 129,376,898.97
  5. Step 5: Solve for x
    x = 129,376,898.97/9,459.80
  6. Step 6: Final answer
    x = 13,676.49

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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.