Home / 20,644.58-28,501.34-13,591.50

Finding the Fourth Proportional to 20,644.58, 28,501.34 and 13,591.50

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Solution

The fourth proportional to 20,644.58, 28,501.34 and 13,591.50 is: 18,764.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644.58 : 28,501.34 = 13,591.50 : x
  2. Step 2: Convert to fraction form
    20,644.58/28,501.34 = 13,591.50/x
  3. Step 3: Cross multiply
    20,644.58x = 28,501.34 × 13,591.50
  4. Step 4: Simplify right side
    20,644.58x = 387,375,894.65
  5. Step 5: Solve for x
    x = 387,375,894.65/20,644.58
  6. Step 6: Final answer
    x = 18,764.05

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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.