Home / 13,777.38-19,012.68-7,489.80

Finding the Fourth Proportional to 13,777.38, 19,012.68 and 7,489.80

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Solution

The fourth proportional to 13,777.38, 19,012.68 and 7,489.80 is: 10,335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.38 : 19,012.68 = 7,489.80 : x
  2. Step 2: Convert to fraction form
    13,777.38/19,012.68 = 7,489.80/x
  3. Step 3: Cross multiply
    13,777.38x = 19,012.68 × 7,489.80
  4. Step 4: Simplify right side
    13,777.38x = 142,401,170.66
  5. Step 5: Solve for x
    x = 142,401,170.66/13,777.38
  6. Step 6: Final answer
    x = 10,335.87

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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.