Home / 12,209.81-18,316.05-3,887.88

Finding the Fourth Proportional to 12,209.81, 18,316.05 and 3,887.88

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Solution

The fourth proportional to 12,209.81, 18,316.05 and 3,887.88 is: 5,832.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.81 : 18,316.05 = 3,887.88 : x
  2. Step 2: Convert to fraction form
    12,209.81/18,316.05 = 3,887.88/x
  3. Step 3: Cross multiply
    12,209.81x = 18,316.05 × 3,887.88
  4. Step 4: Simplify right side
    12,209.81x = 71,210,604.47
  5. Step 5: Solve for x
    x = 71,210,604.47/12,209.81
  6. Step 6: Final answer
    x = 5,832.25

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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.