Home / 20,934.56-28,889.58-11,503.64

Finding the Fourth Proportional to 20,934.56, 28,889.58 and 11,503.64

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Solution

The fourth proportional to 20,934.56, 28,889.58 and 11,503.64 is: 15,874.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.56 : 28,889.58 = 11,503.64 : x
  2. Step 2: Convert to fraction form
    20,934.56/28,889.58 = 11,503.64/x
  3. Step 3: Cross multiply
    20,934.56x = 28,889.58 × 11,503.64
  4. Step 4: Simplify right side
    20,934.56x = 332,335,328.07
  5. Step 5: Solve for x
    x = 332,335,328.07/20,934.56
  6. Step 6: Final answer
    x = 15,874.96

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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.