Home / 15,143.09-20,893.27-9,091.79

Finding the Fourth Proportional to 15,143.09, 20,893.27 and 9,091.79

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Solution

The fourth proportional to 15,143.09, 20,893.27 and 9,091.79 is: 12,544.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,143.09 : 20,893.27 = 9,091.79 : x
  2. Step 2: Convert to fraction form
    15,143.09/20,893.27 = 9,091.79/x
  3. Step 3: Cross multiply
    15,143.09x = 20,893.27 × 9,091.79
  4. Step 4: Simplify right side
    15,143.09x = 189,957,096.06
  5. Step 5: Solve for x
    x = 189,957,096.06/15,143.09
  6. Step 6: Final answer
    x = 12,544.15

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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.