Home / 12,124.90-18,186.78-3,803.62

Finding the Fourth Proportional to 12,124.90, 18,186.78 and 3,803.62

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Solution

The fourth proportional to 12,124.90, 18,186.78 and 3,803.62 is: 5,705.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,124.90 : 18,186.78 = 3,803.62 : x
  2. Step 2: Convert to fraction form
    12,124.90/18,186.78 = 3,803.62/x
  3. Step 3: Cross multiply
    12,124.90x = 18,186.78 × 3,803.62
  4. Step 4: Simplify right side
    12,124.90x = 69,175,600.14
  5. Step 5: Solve for x
    x = 69,175,600.14/12,124.90
  6. Step 6: Final answer
    x = 5,705.25

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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.