Home / 12,299.32-18,531.24-11,130.56

Finding the Fourth Proportional to 12,299.32, 18,531.24 and 11,130.56

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Solution

The fourth proportional to 12,299.32, 18,531.24 and 11,130.56 is: 16,770.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,299.32 : 18,531.24 = 11,130.56 : x
  2. Step 2: Convert to fraction form
    12,299.32/18,531.24 = 11,130.56/x
  3. Step 3: Cross multiply
    12,299.32x = 18,531.24 × 11,130.56
  4. Step 4: Simplify right side
    12,299.32x = 206,263,078.69
  5. Step 5: Solve for x
    x = 206,263,078.69/12,299.32
  6. Step 6: Final answer
    x = 16,770.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.