Home / 20,973.13-28,942.91-11,542.30

Finding the Fourth Proportional to 20,973.13, 28,942.91 and 11,542.30

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Solution

The fourth proportional to 20,973.13, 28,942.91 and 11,542.30 is: 15,928.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.13 : 28,942.91 = 11,542.30 : x
  2. Step 2: Convert to fraction form
    20,973.13/28,942.91 = 11,542.30/x
  3. Step 3: Cross multiply
    20,973.13x = 28,942.91 × 11,542.30
  4. Step 4: Simplify right side
    20,973.13x = 334,067,750.09
  5. Step 5: Solve for x
    x = 334,067,750.09/20,973.13
  6. Step 6: Final answer
    x = 15,928.37

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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.