Home / 11,172.09-15,422.73-6,455.46

Finding the Fourth Proportional to 11,172.09, 15,422.73 and 6,455.46

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Solution

The fourth proportional to 11,172.09, 15,422.73 and 6,455.46 is: 8,911.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.09 : 15,422.73 = 6,455.46 : x
  2. Step 2: Convert to fraction form
    11,172.09/15,422.73 = 6,455.46/x
  3. Step 3: Cross multiply
    11,172.09x = 15,422.73 × 6,455.46
  4. Step 4: Simplify right side
    11,172.09x = 99,560,816.61
  5. Step 5: Solve for x
    x = 99,560,816.61/11,172.09
  6. Step 6: Final answer
    x = 8,911.57

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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.