Home / 13,654.21-18,836.72-11,146.68

Finding the Fourth Proportional to 13,654.21, 18,836.72 and 11,146.68

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Solution

The fourth proportional to 13,654.21, 18,836.72 and 11,146.68 is: 15,377.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.21 : 18,836.72 = 11,146.68 : x
  2. Step 2: Convert to fraction form
    13,654.21/18,836.72 = 11,146.68/x
  3. Step 3: Cross multiply
    13,654.21x = 18,836.72 × 11,146.68
  4. Step 4: Simplify right side
    13,654.21x = 209,966,890.09
  5. Step 5: Solve for x
    x = 209,966,890.09/13,654.21
  6. Step 6: Final answer
    x = 15,377.45

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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.