Home / 13,975.40-20,934.96-6,468.38

Finding the Fourth Proportional to 13,975.40, 20,934.96 and 6,468.38

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Solution

The fourth proportional to 13,975.40, 20,934.96 and 6,468.38 is: 9,689.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,975.40 : 20,934.96 = 6,468.38 : x
  2. Step 2: Convert to fraction form
    13,975.40/20,934.96 = 6,468.38/x
  3. Step 3: Cross multiply
    13,975.40x = 20,934.96 × 6,468.38
  4. Step 4: Simplify right side
    13,975.40x = 135,415,276.56
  5. Step 5: Solve for x
    x = 135,415,276.56/13,975.40
  6. Step 6: Final answer
    x = 9,689.55

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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.