Home / 11,989.40-16,544.96-7,515.56

Finding the Fourth Proportional to 11,989.40, 16,544.96 and 7,515.56

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Solution

The fourth proportional to 11,989.40, 16,544.96 and 7,515.56 is: 10,371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.40 : 16,544.96 = 7,515.56 : x
  2. Step 2: Convert to fraction form
    11,989.40/16,544.96 = 7,515.56/x
  3. Step 3: Cross multiply
    11,989.40x = 16,544.96 × 7,515.56
  4. Step 4: Simplify right side
    11,989.40x = 124,344,639.58
  5. Step 5: Solve for x
    x = 124,344,639.58/11,989.40
  6. Step 6: Final answer
    x = 10,371.21

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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.