Home / 20,267.68-27,968.22-11,315.75

Finding the Fourth Proportional to 20,267.68, 27,968.22 and 11,315.75

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Solution

The fourth proportional to 20,267.68, 27,968.22 and 11,315.75 is: 15,615.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.68 : 27,968.22 = 11,315.75 : x
  2. Step 2: Convert to fraction form
    20,267.68/27,968.22 = 11,315.75/x
  3. Step 3: Cross multiply
    20,267.68x = 27,968.22 × 11,315.75
  4. Step 4: Simplify right side
    20,267.68x = 316,481,385.47
  5. Step 5: Solve for x
    x = 316,481,385.47/20,267.68
  6. Step 6: Final answer
    x = 15,615.08

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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.