Home / 13,201.75-18,215.58-7,825.88

Finding the Fourth Proportional to 13,201.75, 18,215.58 and 7,825.88

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Solution

The fourth proportional to 13,201.75, 18,215.58 and 7,825.88 is: 10,798.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.75 : 18,215.58 = 7,825.88 : x
  2. Step 2: Convert to fraction form
    13,201.75/18,215.58 = 7,825.88/x
  3. Step 3: Cross multiply
    13,201.75x = 18,215.58 × 7,825.88
  4. Step 4: Simplify right side
    13,201.75x = 142,552,988.75
  5. Step 5: Solve for x
    x = 142,552,988.75/13,201.75
  6. Step 6: Final answer
    x = 10,798.04

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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.