Home / 20,837.44-28,756.40-11,406

Finding the Fourth Proportional to 20,837.44, 28,756.40 and 11,406

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Solution

The fourth proportional to 20,837.44, 28,756.40 and 11,406 is: 15,740.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,837.44 : 28,756.40 = 11,406 : x
  2. Step 2: Convert to fraction form
    20,837.44/28,756.40 = 11,406/x
  3. Step 3: Cross multiply
    20,837.44x = 28,756.40 × 11,406
  4. Step 4: Simplify right side
    20,837.44x = 327,995,498.40
  5. Step 5: Solve for x
    x = 327,995,498.40/20,837.44
  6. Step 6: Final answer
    x = 15,740.68

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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.