Home / 10,129.09-13,979.73-5,880.16

Finding the Fourth Proportional to 10,129.09, 13,979.73 and 5,880.16

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Solution

The fourth proportional to 10,129.09, 13,979.73 and 5,880.16 is: 8,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.09 : 13,979.73 = 5,880.16 : x
  2. Step 2: Convert to fraction form
    10,129.09/13,979.73 = 5,880.16/x
  3. Step 3: Cross multiply
    10,129.09x = 13,979.73 × 5,880.16
  4. Step 4: Simplify right side
    10,129.09x = 82,203,049.16
  5. Step 5: Solve for x
    x = 82,203,049.16/10,129.09
  6. Step 6: Final answer
    x = 8,115.54

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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.