Home / 20,803.43-28,708.85-11,372.00

Finding the Fourth Proportional to 20,803.43, 28,708.85 and 11,372.00

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Solution

The fourth proportional to 20,803.43, 28,708.85 and 11,372.00 is: 15,693.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,803.43 : 28,708.85 = 11,372.00 : x
  2. Step 2: Convert to fraction form
    20,803.43/28,708.85 = 11,372.00/x
  3. Step 3: Cross multiply
    20,803.43x = 28,708.85 × 11,372.00
  4. Step 4: Simplify right side
    20,803.43x = 326,476,927.09
  5. Step 5: Solve for x
    x = 326,476,927.09/20,803.43
  6. Step 6: Final answer
    x = 15,693.42

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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.