Home / 12,015.63-16,581.78-6,638.22

Finding the Fourth Proportional to 12,015.63, 16,581.78 and 6,638.22

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Solution

The fourth proportional to 12,015.63, 16,581.78 and 6,638.22 is: 9,160.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.63 : 16,581.78 = 6,638.22 : x
  2. Step 2: Convert to fraction form
    12,015.63/16,581.78 = 6,638.22/x
  3. Step 3: Cross multiply
    12,015.63x = 16,581.78 × 6,638.22
  4. Step 4: Simplify right side
    12,015.63x = 110,073,503.63
  5. Step 5: Solve for x
    x = 110,073,503.63/12,015.63
  6. Step 6: Final answer
    x = 9,160.86

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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.