Home / 28,577.20-39,435.62-15,829.86

Finding the Fourth Proportional to 28,577.20, 39,435.62 and 15,829.86

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Solution

The fourth proportional to 28,577.20, 39,435.62 and 15,829.86 is: 21,844.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,577.20 : 39,435.62 = 15,829.86 : x
  2. Step 2: Convert to fraction form
    28,577.20/39,435.62 = 15,829.86/x
  3. Step 3: Cross multiply
    28,577.20x = 39,435.62 × 15,829.86
  4. Step 4: Simplify right side
    28,577.20x = 624,260,343.61
  5. Step 5: Solve for x
    x = 624,260,343.61/28,577.20
  6. Step 6: Final answer
    x = 21,844.70

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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.