Home / 11,172.35-15,422.67-7,397.35

Finding the Fourth Proportional to 11,172.35, 15,422.67 and 7,397.35

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Solution

The fourth proportional to 11,172.35, 15,422.67 and 7,397.35 is: 10,211.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.35 : 15,422.67 = 7,397.35 : x
  2. Step 2: Convert to fraction form
    11,172.35/15,422.67 = 7,397.35/x
  3. Step 3: Cross multiply
    11,172.35x = 15,422.67 × 7,397.35
  4. Step 4: Simplify right side
    11,172.35x = 114,086,849.37
  5. Step 5: Solve for x
    x = 114,086,849.37/11,172.35
  6. Step 6: Final answer
    x = 10,211.53

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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.