Home / 12,540.36-17,305.08-7,507.36

Finding the Fourth Proportional to 12,540.36, 17,305.08 and 7,507.36

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Solution

The fourth proportional to 12,540.36, 17,305.08 and 7,507.36 is: 10,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.36 : 17,305.08 = 7,507.36 : x
  2. Step 2: Convert to fraction form
    12,540.36/17,305.08 = 7,507.36/x
  3. Step 3: Cross multiply
    12,540.36x = 17,305.08 × 7,507.36
  4. Step 4: Simplify right side
    12,540.36x = 129,915,465.39
  5. Step 5: Solve for x
    x = 129,915,465.39/12,540.36
  6. Step 6: Final answer
    x = 10,359.79

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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.