Home / 18,521.21-25,558.28-10,136.09

Finding the Fourth Proportional to 18,521.21, 25,558.28 and 10,136.09

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Solution

The fourth proportional to 18,521.21, 25,558.28 and 10,136.09 is: 13,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,521.21 : 25,558.28 = 10,136.09 : x
  2. Step 2: Convert to fraction form
    18,521.21/25,558.28 = 10,136.09/x
  3. Step 3: Cross multiply
    18,521.21x = 25,558.28 × 10,136.09
  4. Step 4: Simplify right side
    18,521.21x = 259,060,923.87
  5. Step 5: Solve for x
    x = 259,060,923.87/18,521.21
  6. Step 6: Final answer
    x = 13,987.26

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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.