Home / 12,654.72-18,934.56-11,988

Finding the Fourth Proportional to 12,654.72, 18,934.56 and 11,988

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Solution

The fourth proportional to 12,654.72, 18,934.56 and 11,988 is: 17,936.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.72 : 18,934.56 = 11,988 : x
  2. Step 2: Convert to fraction form
    12,654.72/18,934.56 = 11,988/x
  3. Step 3: Cross multiply
    12,654.72x = 18,934.56 × 11,988
  4. Step 4: Simplify right side
    12,654.72x = 226,987,505.28
  5. Step 5: Solve for x
    x = 226,987,505.28/12,654.72
  6. Step 6: Final answer
    x = 17,936.98

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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.