Home / 20,507.25-30,739.86-15,566.43

Finding the Fourth Proportional to 20,507.25, 30,739.86 and 15,566.43

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Solution

The fourth proportional to 20,507.25, 30,739.86 and 15,566.43 is: 23,333.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,507.25 : 30,739.86 = 15,566.43 : x
  2. Step 2: Convert to fraction form
    20,507.25/30,739.86 = 15,566.43/x
  3. Step 3: Cross multiply
    20,507.25x = 30,739.86 × 15,566.43
  4. Step 4: Simplify right side
    20,507.25x = 478,509,878.90
  5. Step 5: Solve for x
    x = 478,509,878.90/20,507.25
  6. Step 6: Final answer
    x = 23,333.69

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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.