Home / 13,420.26-18,519.37-7,451.46

Finding the Fourth Proportional to 13,420.26, 18,519.37 and 7,451.46

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Solution

The fourth proportional to 13,420.26, 18,519.37 and 7,451.46 is: 10,282.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.26 : 18,519.37 = 7,451.46 : x
  2. Step 2: Convert to fraction form
    13,420.26/18,519.37 = 7,451.46/x
  3. Step 3: Cross multiply
    13,420.26x = 18,519.37 × 7,451.46
  4. Step 4: Simplify right side
    13,420.26x = 137,996,326.15
  5. Step 5: Solve for x
    x = 137,996,326.15/13,420.26
  6. Step 6: Final answer
    x = 10,282.69

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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.