Home / 20,943.53-31,425.92-13,928.42

Finding the Fourth Proportional to 20,943.53, 31,425.92 and 13,928.42

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Solution

The fourth proportional to 20,943.53, 31,425.92 and 13,928.42 is: 20,899.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,943.53 : 31,425.92 = 13,928.42 : x
  2. Step 2: Convert to fraction form
    20,943.53/31,425.92 = 13,928.42/x
  3. Step 3: Cross multiply
    20,943.53x = 31,425.92 × 13,928.42
  4. Step 4: Simplify right side
    20,943.53x = 437,713,185.87
  5. Step 5: Solve for x
    x = 437,713,185.87/20,943.53
  6. Step 6: Final answer
    x = 20,899.69

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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.