Home / 20,267.34-27,971.76-11,315.42

Finding the Fourth Proportional to 20,267.34, 27,971.76 and 11,315.42

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Solution

The fourth proportional to 20,267.34, 27,971.76 and 11,315.42 is: 15,616.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.34 : 27,971.76 = 11,315.42 : x
  2. Step 2: Convert to fraction form
    20,267.34/27,971.76 = 11,315.42/x
  3. Step 3: Cross multiply
    20,267.34x = 27,971.76 × 11,315.42
  4. Step 4: Simplify right side
    20,267.34x = 316,512,212.54
  5. Step 5: Solve for x
    x = 316,512,212.54/20,267.34
  6. Step 6: Final answer
    x = 15,616.86

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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.