Home / 11,195.50-15,447.36-7,215.70

Finding the Fourth Proportional to 11,195.50, 15,447.36 and 7,215.70

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Solution

The fourth proportional to 11,195.50, 15,447.36 and 7,215.70 is: 9,956.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,195.50 : 15,447.36 = 7,215.70 : x
  2. Step 2: Convert to fraction form
    11,195.50/15,447.36 = 7,215.70/x
  3. Step 3: Cross multiply
    11,195.50x = 15,447.36 × 7,215.70
  4. Step 4: Simplify right side
    11,195.50x = 111,463,515.55
  5. Step 5: Solve for x
    x = 111,463,515.55/11,195.50
  6. Step 6: Final answer
    x = 9,956.10

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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.