Home / 11,255.58-15,516.23-7,888.22

Finding the Fourth Proportional to 11,255.58, 15,516.23 and 7,888.22

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Solution

The fourth proportional to 11,255.58, 15,516.23 and 7,888.22 is: 10,874.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,255.58 : 15,516.23 = 7,888.22 : x
  2. Step 2: Convert to fraction form
    11,255.58/15,516.23 = 7,888.22/x
  3. Step 3: Cross multiply
    11,255.58x = 15,516.23 × 7,888.22
  4. Step 4: Simplify right side
    11,255.58x = 122,395,318.79
  5. Step 5: Solve for x
    x = 122,395,318.79/11,255.58
  6. Step 6: Final answer
    x = 10,874.19

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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.