Home / 13,515.39-20,273.09-3,655.71

Finding the Fourth Proportional to 13,515.39, 20,273.09 and 3,655.71

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Solution

The fourth proportional to 13,515.39, 20,273.09 and 3,655.71 is: 5,483.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.39 : 20,273.09 = 3,655.71 : x
  2. Step 2: Convert to fraction form
    13,515.39/20,273.09 = 3,655.71/x
  3. Step 3: Cross multiply
    13,515.39x = 20,273.09 × 3,655.71
  4. Step 4: Simplify right side
    13,515.39x = 74,112,519.57
  5. Step 5: Solve for x
    x = 74,112,519.57/13,515.39
  6. Step 6: Final answer
    x = 5,483.57

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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.