Home / 13,554.70-20,239.78-11,960.13

Finding the Fourth Proportional to 13,554.70, 20,239.78 and 11,960.13

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Solution

The fourth proportional to 13,554.70, 20,239.78 and 11,960.13 is: 17,858.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,554.70 : 20,239.78 = 11,960.13 : x
  2. Step 2: Convert to fraction form
    13,554.70/20,239.78 = 11,960.13/x
  3. Step 3: Cross multiply
    13,554.70x = 20,239.78 × 11,960.13
  4. Step 4: Simplify right side
    13,554.70x = 242,070,354.55
  5. Step 5: Solve for x
    x = 242,070,354.55/13,554.70
  6. Step 6: Final answer
    x = 17,858.78

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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.