Home / 28,821.28-43,231.11-15,756.40

Finding the Fourth Proportional to 28,821.28, 43,231.11 and 15,756.40

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Solution

The fourth proportional to 28,821.28, 43,231.11 and 15,756.40 is: 23,634.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,821.28 : 43,231.11 = 15,756.40 : x
  2. Step 2: Convert to fraction form
    28,821.28/43,231.11 = 15,756.40/x
  3. Step 3: Cross multiply
    28,821.28x = 43,231.11 × 15,756.40
  4. Step 4: Simplify right side
    28,821.28x = 681,166,661.60
  5. Step 5: Solve for x
    x = 681,166,661.60/28,821.28
  6. Step 6: Final answer
    x = 23,634.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.