Home / 20,609.34-28,441.05-11,177.90

Finding the Fourth Proportional to 20,609.34, 28,441.05 and 11,177.90

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Solution

The fourth proportional to 20,609.34, 28,441.05 and 11,177.90 is: 15,425.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.34 : 28,441.05 = 11,177.90 : x
  2. Step 2: Convert to fraction form
    20,609.34/28,441.05 = 11,177.90/x
  3. Step 3: Cross multiply
    20,609.34x = 28,441.05 × 11,177.90
  4. Step 4: Simplify right side
    20,609.34x = 317,911,212.80
  5. Step 5: Solve for x
    x = 317,911,212.80/20,609.34
  6. Step 6: Final answer
    x = 15,425.59

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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.