Home / 13,419.59-18,519.24-7,451.28

Finding the Fourth Proportional to 13,419.59, 18,519.24 and 7,451.28

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Solution

The fourth proportional to 13,419.59, 18,519.24 and 7,451.28 is: 10,282.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.59 : 18,519.24 = 7,451.28 : x
  2. Step 2: Convert to fraction form
    13,419.59/18,519.24 = 7,451.28/x
  3. Step 3: Cross multiply
    13,419.59x = 18,519.24 × 7,451.28
  4. Step 4: Simplify right side
    13,419.59x = 137,992,042.63
  5. Step 5: Solve for x
    x = 137,992,042.63/13,419.59
  6. Step 6: Final answer
    x = 10,282.88

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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.