Home / 20,979.09-28,951.97-11,548.53

Finding the Fourth Proportional to 20,979.09, 28,951.97 and 11,548.53

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Solution

The fourth proportional to 20,979.09, 28,951.97 and 11,548.53 is: 15,937.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979.09 : 28,951.97 = 11,548.53 : x
  2. Step 2: Convert to fraction form
    20,979.09/28,951.97 = 11,548.53/x
  3. Step 3: Cross multiply
    20,979.09x = 28,951.97 × 11,548.53
  4. Step 4: Simplify right side
    20,979.09x = 334,352,636.36
  5. Step 5: Solve for x
    x = 334,352,636.36/20,979.09
  6. Step 6: Final answer
    x = 15,937.42

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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.