Home / 12,255.75-16,913.21-6,666.75

Finding the Fourth Proportional to 12,255.75, 16,913.21 and 6,666.75

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Solution

The fourth proportional to 12,255.75, 16,913.21 and 6,666.75 is: 9,200.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.75 : 16,913.21 = 6,666.75 : x
  2. Step 2: Convert to fraction form
    12,255.75/16,913.21 = 6,666.75/x
  3. Step 3: Cross multiply
    12,255.75x = 16,913.21 × 6,666.75
  4. Step 4: Simplify right side
    12,255.75x = 112,756,109.43
  5. Step 5: Solve for x
    x = 112,756,109.43/12,255.75
  6. Step 6: Final answer
    x = 9,200.26

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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.