Home / 11,647.40-17,447.81-8,511.89

Finding the Fourth Proportional to 11,647.40, 17,447.81 and 8,511.89

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Solution

The fourth proportional to 11,647.40, 17,447.81 and 8,511.89 is: 12,750.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,647.40 : 17,447.81 = 8,511.89 : x
  2. Step 2: Convert to fraction form
    11,647.40/17,447.81 = 8,511.89/x
  3. Step 3: Cross multiply
    11,647.40x = 17,447.81 × 8,511.89
  4. Step 4: Simplify right side
    11,647.40x = 148,513,709.66
  5. Step 5: Solve for x
    x = 148,513,709.66/11,647.40
  6. Step 6: Final answer
    x = 12,750.81

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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.