Home / 20,584.03-28,406.02-11,152.60

Finding the Fourth Proportional to 20,584.03, 28,406.02 and 11,152.60

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Solution

The fourth proportional to 20,584.03, 28,406.02 and 11,152.60 is: 15,390.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,584.03 : 28,406.02 = 11,152.60 : x
  2. Step 2: Convert to fraction form
    20,584.03/28,406.02 = 11,152.60/x
  3. Step 3: Cross multiply
    20,584.03x = 28,406.02 × 11,152.60
  4. Step 4: Simplify right side
    20,584.03x = 316,800,978.65
  5. Step 5: Solve for x
    x = 316,800,978.65/20,584.03
  6. Step 6: Final answer
    x = 15,390.62

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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.