Home / 12,210.83-18,316.39-3,890.80

Finding the Fourth Proportional to 12,210.83, 18,316.39 and 3,890.80

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Solution

The fourth proportional to 12,210.83, 18,316.39 and 3,890.80 is: 5,836.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.83 : 18,316.39 = 3,890.80 : x
  2. Step 2: Convert to fraction form
    12,210.83/18,316.39 = 3,890.80/x
  3. Step 3: Cross multiply
    12,210.83x = 18,316.39 × 3,890.80
  4. Step 4: Simplify right side
    12,210.83x = 71,265,410.21
  5. Step 5: Solve for x
    x = 71,265,410.21/12,210.83
  6. Step 6: Final answer
    x = 5,836.25

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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.