Home / 20,883.84-28,821.24-11,453.28

Finding the Fourth Proportional to 20,883.84, 28,821.24 and 11,453.28

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Solution

The fourth proportional to 20,883.84, 28,821.24 and 11,453.28 is: 15,806.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.84 : 28,821.24 = 11,453.28 : x
  2. Step 2: Convert to fraction form
    20,883.84/28,821.24 = 11,453.28/x
  3. Step 3: Cross multiply
    20,883.84x = 28,821.24 × 11,453.28
  4. Step 4: Simplify right side
    20,883.84x = 330,097,731.67
  5. Step 5: Solve for x
    x = 330,097,731.67/20,883.84
  6. Step 6: Final answer
    x = 15,806.37

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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.