Home / 20,834.07-28,750.30-11,402.43

Finding the Fourth Proportional to 20,834.07, 28,750.30 and 11,402.43

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Solution

The fourth proportional to 20,834.07, 28,750.30 and 11,402.43 is: 15,734.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.07 : 28,750.30 = 11,402.43 : x
  2. Step 2: Convert to fraction form
    20,834.07/28,750.30 = 11,402.43/x
  3. Step 3: Cross multiply
    20,834.07x = 28,750.30 × 11,402.43
  4. Step 4: Simplify right side
    20,834.07x = 327,823,283.23
  5. Step 5: Solve for x
    x = 327,823,283.23/20,834.07
  6. Step 6: Final answer
    x = 15,734.96

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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.