Home / 22,178.12-30,606.08-13,230.78

Finding the Fourth Proportional to 22,178.12, 30,606.08 and 13,230.78

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Solution

The fourth proportional to 22,178.12, 30,606.08 and 13,230.78 is: 18,258.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,178.12 : 30,606.08 = 13,230.78 : x
  2. Step 2: Convert to fraction form
    22,178.12/30,606.08 = 13,230.78/x
  3. Step 3: Cross multiply
    22,178.12x = 30,606.08 × 13,230.78
  4. Step 4: Simplify right side
    22,178.12x = 404,942,244.99
  5. Step 5: Solve for x
    x = 404,942,244.99/22,178.12
  6. Step 6: Final answer
    x = 18,258.64

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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.