Home / 20,973.62-28,945.01-11,542.79

Finding the Fourth Proportional to 20,973.62, 28,945.01 and 11,542.79

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Solution

The fourth proportional to 20,973.62, 28,945.01 and 11,542.79 is: 15,929.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.62 : 28,945.01 = 11,542.79 : x
  2. Step 2: Convert to fraction form
    20,973.62/28,945.01 = 11,542.79/x
  3. Step 3: Cross multiply
    20,973.62x = 28,945.01 × 11,542.79
  4. Step 4: Simplify right side
    20,973.62x = 334,106,171.98
  5. Step 5: Solve for x
    x = 334,106,171.98/20,973.62
  6. Step 6: Final answer
    x = 15,929.83

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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.