Home / 20,934.32-28,889.33-11,503.49

Finding the Fourth Proportional to 20,934.32, 28,889.33 and 11,503.49

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Solution

The fourth proportional to 20,934.32, 28,889.33 and 11,503.49 is: 15,874.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.32 : 28,889.33 = 11,503.49 : x
  2. Step 2: Convert to fraction form
    20,934.32/28,889.33 = 11,503.49/x
  3. Step 3: Cross multiply
    20,934.32x = 28,889.33 × 11,503.49
  4. Step 4: Simplify right side
    20,934.32x = 332,327,916.80
  5. Step 5: Solve for x
    x = 332,327,916.80/20,934.32
  6. Step 6: Final answer
    x = 15,874.79

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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.