Home / 20,273.40-27,977.28-11,320.91

Finding the Fourth Proportional to 20,273.40, 27,977.28 and 11,320.91

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Solution

The fourth proportional to 20,273.40, 27,977.28 and 11,320.91 is: 15,622.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,273.40 : 27,977.28 = 11,320.91 : x
  2. Step 2: Convert to fraction form
    20,273.40/27,977.28 = 11,320.91/x
  3. Step 3: Cross multiply
    20,273.40x = 27,977.28 × 11,320.91
  4. Step 4: Simplify right side
    20,273.40x = 316,728,129.04
  5. Step 5: Solve for x
    x = 316,728,129.04/20,273.40
  6. Step 6: Final answer
    x = 15,622.84

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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.