Home / 30,154.17-41,611.78-18,215.43

Finding the Fourth Proportional to 30,154.17, 41,611.78 and 18,215.43

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Solution

The fourth proportional to 30,154.17, 41,611.78 and 18,215.43 is: 25,136.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.17 : 41,611.78 = 18,215.43 : x
  2. Step 2: Convert to fraction form
    30,154.17/41,611.78 = 18,215.43/x
  3. Step 3: Cross multiply
    30,154.17x = 41,611.78 × 18,215.43
  4. Step 4: Simplify right side
    30,154.17x = 757,976,464.09
  5. Step 5: Solve for x
    x = 757,976,464.09/30,154.17
  6. Step 6: Final answer
    x = 25,136.70

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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.