Home / 20,715.13-31,083.83-9,027.64

Finding the Fourth Proportional to 20,715.13, 31,083.83 and 9,027.64

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Solution

The fourth proportional to 20,715.13, 31,083.83 and 9,027.64 is: 13,546.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.13 : 31,083.83 = 9,027.64 : x
  2. Step 2: Convert to fraction form
    20,715.13/31,083.83 = 9,027.64/x
  3. Step 3: Cross multiply
    20,715.13x = 31,083.83 × 9,027.64
  4. Step 4: Simplify right side
    20,715.13x = 280,613,627.06
  5. Step 5: Solve for x
    x = 280,613,627.06/20,715.13
  6. Step 6: Final answer
    x = 13,546.31

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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.