Home / 11,911.89-16,438.38-6,607.50

Finding the Fourth Proportional to 11,911.89, 16,438.38 and 6,607.50

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Solution

The fourth proportional to 11,911.89, 16,438.38 and 6,607.50 is: 9,118.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,911.89 : 16,438.38 = 6,607.50 : x
  2. Step 2: Convert to fraction form
    11,911.89/16,438.38 = 6,607.50/x
  3. Step 3: Cross multiply
    11,911.89x = 16,438.38 × 6,607.50
  4. Step 4: Simplify right side
    11,911.89x = 108,616,595.85
  5. Step 5: Solve for x
    x = 108,616,595.85/11,911.89
  6. Step 6: Final answer
    x = 9,118.33

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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.