Home / 12,129.33-18,187.85-5,549.88

Finding the Fourth Proportional to 12,129.33, 18,187.85 and 5,549.88

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Solution

The fourth proportional to 12,129.33, 18,187.85 and 5,549.88 is: 8,322.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.33 : 18,187.85 = 5,549.88 : x
  2. Step 2: Convert to fraction form
    12,129.33/18,187.85 = 5,549.88/x
  3. Step 3: Cross multiply
    12,129.33x = 18,187.85 × 5,549.88
  4. Step 4: Simplify right side
    12,129.33x = 100,940,384.67
  5. Step 5: Solve for x
    x = 100,940,384.67/12,129.33
  6. Step 6: Final answer
    x = 8,322.01

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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.