Home / 13,185.64-18,195.60-7,217.56

Finding the Fourth Proportional to 13,185.64, 18,195.60 and 7,217.56

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Solution

The fourth proportional to 13,185.64, 18,195.60 and 7,217.56 is: 9,959.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.64 : 18,195.60 = 7,217.56 : x
  2. Step 2: Convert to fraction form
    13,185.64/18,195.60 = 7,217.56/x
  3. Step 3: Cross multiply
    13,185.64x = 18,195.60 × 7,217.56
  4. Step 4: Simplify right side
    13,185.64x = 131,327,834.74
  5. Step 5: Solve for x
    x = 131,327,834.74/13,185.64
  6. Step 6: Final answer
    x = 9,959.91

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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.