Home / 12,057.18-16,638.53-6,679.40

Finding the Fourth Proportional to 12,057.18, 16,638.53 and 6,679.40

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Solution

The fourth proportional to 12,057.18, 16,638.53 and 6,679.40 is: 9,217.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,057.18 : 16,638.53 = 6,679.40 : x
  2. Step 2: Convert to fraction form
    12,057.18/16,638.53 = 6,679.40/x
  3. Step 3: Cross multiply
    12,057.18x = 16,638.53 × 6,679.40
  4. Step 4: Simplify right side
    12,057.18x = 111,135,338.99
  5. Step 5: Solve for x
    x = 111,135,338.99/12,057.18
  6. Step 6: Final answer
    x = 9,217.36

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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.