Home / 28,175.56-42,221.64-11,515.48

Finding the Fourth Proportional to 28,175.56, 42,221.64 and 11,515.48

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Solution

The fourth proportional to 28,175.56, 42,221.64 and 11,515.48 is: 17,256.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.56 : 42,221.64 = 11,515.48 : x
  2. Step 2: Convert to fraction form
    28,175.56/42,221.64 = 11,515.48/x
  3. Step 3: Cross multiply
    28,175.56x = 42,221.64 × 11,515.48
  4. Step 4: Simplify right side
    28,175.56x = 486,202,450.99
  5. Step 5: Solve for x
    x = 486,202,450.99/28,175.56
  6. Step 6: Final answer
    x = 17,256.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.