Home / 20,272.18-27,973.38-11,320.06

Finding the Fourth Proportional to 20,272.18, 27,973.38 and 11,320.06

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Solution

The fourth proportional to 20,272.18, 27,973.38 and 11,320.06 is: 15,620.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.18 : 27,973.38 = 11,320.06 : x
  2. Step 2: Convert to fraction form
    20,272.18/27,973.38 = 11,320.06/x
  3. Step 3: Cross multiply
    20,272.18x = 27,973.38 × 11,320.06
  4. Step 4: Simplify right side
    20,272.18x = 316,660,340.00
  5. Step 5: Solve for x
    x = 316,660,340.00/20,272.18
  6. Step 6: Final answer
    x = 15,620.44

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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.