Home / 28,109.60-42,184.96-20,733.96

Finding the Fourth Proportional to 28,109.60, 42,184.96 and 20,733.96

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Solution

The fourth proportional to 28,109.60, 42,184.96 and 20,733.96 is: 31,116.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.60 : 42,184.96 = 20,733.96 : x
  2. Step 2: Convert to fraction form
    28,109.60/42,184.96 = 20,733.96/x
  3. Step 3: Cross multiply
    28,109.60x = 42,184.96 × 20,733.96
  4. Step 4: Simplify right side
    28,109.60x = 874,661,273.24
  5. Step 5: Solve for x
    x = 874,661,273.24/28,109.60
  6. Step 6: Final answer
    x = 31,116.11

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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.