Home / 13,040.24-17,975.64-7,995.12

Finding the Fourth Proportional to 13,040.24, 17,975.64 and 7,995.12

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Solution

The fourth proportional to 13,040.24, 17,975.64 and 7,995.12 is: 11,021.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,040.24 : 17,975.64 = 7,995.12 : x
  2. Step 2: Convert to fraction form
    13,040.24/17,975.64 = 7,995.12/x
  3. Step 3: Cross multiply
    13,040.24x = 17,975.64 × 7,995.12
  4. Step 4: Simplify right side
    13,040.24x = 143,717,398.88
  5. Step 5: Solve for x
    x = 143,717,398.88/13,040.24
  6. Step 6: Final answer
    x = 11,021.07

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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.