Home / 20,803.88-28,708.34-11,372.44

Finding the Fourth Proportional to 20,803.88, 28,708.34 and 11,372.44

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Solution

The fourth proportional to 20,803.88, 28,708.34 and 11,372.44 is: 15,693.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.88 : 28,708.34 = 11,372.44 : x
  2. Step 2: Convert to fraction form
    20,803.88/28,708.34 = 11,372.44/x
  3. Step 3: Cross multiply
    20,803.88x = 28,708.34 × 11,372.44
  4. Step 4: Simplify right side
    20,803.88x = 326,483,874.15
  5. Step 5: Solve for x
    x = 326,483,874.15/20,803.88
  6. Step 6: Final answer
    x = 15,693.41

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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.