Home / 13,682.88-18,882.40-7,714.60

Finding the Fourth Proportional to 13,682.88, 18,882.40 and 7,714.60

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Solution

The fourth proportional to 13,682.88, 18,882.40 and 7,714.60 is: 10,646.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,682.88 : 18,882.40 = 7,714.60 : x
  2. Step 2: Convert to fraction form
    13,682.88/18,882.40 = 7,714.60/x
  3. Step 3: Cross multiply
    13,682.88x = 18,882.40 × 7,714.60
  4. Step 4: Simplify right side
    13,682.88x = 145,670,163.04
  5. Step 5: Solve for x
    x = 145,670,163.04/13,682.88
  6. Step 6: Final answer
    x = 10,646.16

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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.