Home / 11,817.81-17,732.85-7,656.72

Finding the Fourth Proportional to 11,817.81, 17,732.85 and 7,656.72

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Solution

The fourth proportional to 11,817.81, 17,732.85 and 7,656.72 is: 11,489.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.81 : 17,732.85 = 7,656.72 : x
  2. Step 2: Convert to fraction form
    11,817.81/17,732.85 = 7,656.72/x
  3. Step 3: Cross multiply
    11,817.81x = 17,732.85 × 7,656.72
  4. Step 4: Simplify right side
    11,817.81x = 135,775,467.25
  5. Step 5: Solve for x
    x = 135,775,467.25/11,817.81
  6. Step 6: Final answer
    x = 11,489.05

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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.