Home / 20,979.76-28,952.07-11,548.25

Finding the Fourth Proportional to 20,979.76, 28,952.07 and 11,548.25

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Solution

The fourth proportional to 20,979.76, 28,952.07 and 11,548.25 is: 15,936.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979.76 : 28,952.07 = 11,548.25 : x
  2. Step 2: Convert to fraction form
    20,979.76/28,952.07 = 11,548.25/x
  3. Step 3: Cross multiply
    20,979.76x = 28,952.07 × 11,548.25
  4. Step 4: Simplify right side
    20,979.76x = 334,345,742.38
  5. Step 5: Solve for x
    x = 334,345,742.38/20,979.76
  6. Step 6: Final answer
    x = 15,936.59

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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.