Home / 13,185.17-18,195.57-7,216.88

Finding the Fourth Proportional to 13,185.17, 18,195.57 and 7,216.88

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Solution

The fourth proportional to 13,185.17, 18,195.57 and 7,216.88 is: 9,959.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.17 : 18,195.57 = 7,216.88 : x
  2. Step 2: Convert to fraction form
    13,185.17/18,195.57 = 7,216.88/x
  3. Step 3: Cross multiply
    13,185.17x = 18,195.57 × 7,216.88
  4. Step 4: Simplify right side
    13,185.17x = 131,315,209.14
  5. Step 5: Solve for x
    x = 131,315,209.14/13,185.17
  6. Step 6: Final answer
    x = 9,959.31

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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.