Home / 13,757.53-18,986.97-12,913.06

Finding the Fourth Proportional to 13,757.53, 18,986.97 and 12,913.06

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Solution

The fourth proportional to 13,757.53, 18,986.97 and 12,913.06 is: 17,821.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757.53 : 18,986.97 = 12,913.06 : x
  2. Step 2: Convert to fraction form
    13,757.53/18,986.97 = 12,913.06/x
  3. Step 3: Cross multiply
    13,757.53x = 18,986.97 × 12,913.06
  4. Step 4: Simplify right side
    13,757.53x = 245,179,882.83
  5. Step 5: Solve for x
    x = 245,179,882.83/13,757.53
  6. Step 6: Final answer
    x = 17,821.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.