Home / 20,379.36-30,523.88-15,664.65

Finding the Fourth Proportional to 20,379.36, 30,523.88 and 15,664.65

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Solution

The fourth proportional to 20,379.36, 30,523.88 and 15,664.65 is: 23,462.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379.36 : 30,523.88 = 15,664.65 : x
  2. Step 2: Convert to fraction form
    20,379.36/30,523.88 = 15,664.65/x
  3. Step 3: Cross multiply
    20,379.36x = 30,523.88 × 15,664.65
  4. Step 4: Simplify right side
    20,379.36x = 478,145,818.52
  5. Step 5: Solve for x
    x = 478,145,818.52/20,379.36
  6. Step 6: Final answer
    x = 23,462.26

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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.