Home / 30,175.13-45,265.33-12,406.87

Finding the Fourth Proportional to 30,175.13, 45,265.33 and 12,406.87

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Solution

The fourth proportional to 30,175.13, 45,265.33 and 12,406.87 is: 18,611.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,175.13 : 45,265.33 = 12,406.87 : x
  2. Step 2: Convert to fraction form
    30,175.13/45,265.33 = 12,406.87/x
  3. Step 3: Cross multiply
    30,175.13x = 45,265.33 × 12,406.87
  4. Step 4: Simplify right side
    30,175.13x = 561,601,136.91
  5. Step 5: Solve for x
    x = 561,601,136.91/30,175.13
  6. Step 6: Final answer
    x = 18,611.39

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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.