Home / 20,273.36-27,973.82-11,320.90

Finding the Fourth Proportional to 20,273.36, 27,973.82 and 11,320.90

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Solution

The fourth proportional to 20,273.36, 27,973.82 and 11,320.90 is: 15,620.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.36 : 27,973.82 = 11,320.90 : x
  2. Step 2: Convert to fraction form
    20,273.36/27,973.82 = 11,320.90/x
  3. Step 3: Cross multiply
    20,273.36x = 27,973.82 × 11,320.90
  4. Step 4: Simplify right side
    20,273.36x = 316,688,777.21
  5. Step 5: Solve for x
    x = 316,688,777.21/20,273.36
  6. Step 6: Final answer
    x = 15,620.94

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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.