Home / 13,975.85-20,965.14-5,208.71

Finding the Fourth Proportional to 13,975.85, 20,965.14 and 5,208.71

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Solution

The fourth proportional to 13,975.85, 20,965.14 and 5,208.71 is: 7,813.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.85 : 20,965.14 = 5,208.71 : x
  2. Step 2: Convert to fraction form
    13,975.85/20,965.14 = 5,208.71/x
  3. Step 3: Cross multiply
    13,975.85x = 20,965.14 × 5,208.71
  4. Step 4: Simplify right side
    13,975.85x = 109,201,386.78
  5. Step 5: Solve for x
    x = 109,201,386.78/13,975.85
  6. Step 6: Final answer
    x = 7,813.58

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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.