Home / 12,253.78-18,280.67-11,914.84

Finding the Fourth Proportional to 12,253.78, 18,280.67 and 11,914.84

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Solution

The fourth proportional to 12,253.78, 18,280.67 and 11,914.84 is: 17,775.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,253.78 : 18,280.67 = 11,914.84 : x
  2. Step 2: Convert to fraction form
    12,253.78/18,280.67 = 11,914.84/x
  3. Step 3: Cross multiply
    12,253.78x = 18,280.67 × 11,914.84
  4. Step 4: Simplify right side
    12,253.78x = 217,811,258.14
  5. Step 5: Solve for x
    x = 217,811,258.14/12,253.78
  6. Step 6: Final answer
    x = 17,775.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.