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Finding the Fourth Proportional to 13,576.29, 18,736.05 and 7,609.89

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Solution

The fourth proportional to 13,576.29, 18,736.05 and 7,609.89 is: 10,502.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,576.29 : 18,736.05 = 7,609.89 : x
  2. Step 2: Convert to fraction form
    13,576.29/18,736.05 = 7,609.89/x
  3. Step 3: Cross multiply
    13,576.29x = 18,736.05 × 7,609.89
  4. Step 4: Simplify right side
    13,576.29x = 142,579,279.53
  5. Step 5: Solve for x
    x = 142,579,279.53/13,576.29
  6. Step 6: Final answer
    x = 10,502.08

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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.