Home / 30,136.92-45,173.98-10,131.56

Finding the Fourth Proportional to 30,136.92, 45,173.98 and 10,131.56

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Solution

The fourth proportional to 30,136.92, 45,173.98 and 10,131.56 is: 15,186.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,136.92 : 45,173.98 = 10,131.56 : x
  2. Step 2: Convert to fraction form
    30,136.92/45,173.98 = 10,131.56/x
  3. Step 3: Cross multiply
    30,136.92x = 45,173.98 × 10,131.56
  4. Step 4: Simplify right side
    30,136.92x = 457,682,888.81
  5. Step 5: Solve for x
    x = 457,682,888.81/30,136.92
  6. Step 6: Final answer
    x = 15,186.78

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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.