Home / 13,605.48-18,772.36-7,936.84

Finding the Fourth Proportional to 13,605.48, 18,772.36 and 7,936.84

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Solution

The fourth proportional to 13,605.48, 18,772.36 and 7,936.84 is: 10,950.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.48 : 18,772.36 = 7,936.84 : x
  2. Step 2: Convert to fraction form
    13,605.48/18,772.36 = 7,936.84/x
  3. Step 3: Cross multiply
    13,605.48x = 18,772.36 × 7,936.84
  4. Step 4: Simplify right side
    13,605.48x = 148,993,217.74
  5. Step 5: Solve for x
    x = 148,993,217.74/13,605.48
  6. Step 6: Final answer
    x = 10,950.97

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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.