Home / 13,839.99-20,743.74-6,428.83

Finding the Fourth Proportional to 13,839.99, 20,743.74 and 6,428.83

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Solution

The fourth proportional to 13,839.99, 20,743.74 and 6,428.83 is: 9,635.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.99 : 20,743.74 = 6,428.83 : x
  2. Step 2: Convert to fraction form
    13,839.99/20,743.74 = 6,428.83/x
  3. Step 3: Cross multiply
    13,839.99x = 20,743.74 × 6,428.83
  4. Step 4: Simplify right side
    13,839.99x = 133,357,945.88
  5. Step 5: Solve for x
    x = 133,357,945.88/13,839.99
  6. Step 6: Final answer
    x = 9,635.70

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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.