Home / 13,419.27-20,131.65-5,097.72

Finding the Fourth Proportional to 13,419.27, 20,131.65 and 5,097.72

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Solution

The fourth proportional to 13,419.27, 20,131.65 and 5,097.72 is: 7,647.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.27 : 20,131.65 = 5,097.72 : x
  2. Step 2: Convert to fraction form
    13,419.27/20,131.65 = 5,097.72/x
  3. Step 3: Cross multiply
    13,419.27x = 20,131.65 × 5,097.72
  4. Step 4: Simplify right side
    13,419.27x = 102,625,514.84
  5. Step 5: Solve for x
    x = 102,625,514.84/13,419.27
  6. Step 6: Final answer
    x = 7,647.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.