Home / 20,769.93-28,621.31-14,791.05

Finding the Fourth Proportional to 20,769.93, 28,621.31 and 14,791.05

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Solution

The fourth proportional to 20,769.93, 28,621.31 and 14,791.05 is: 20,382.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.93 : 28,621.31 = 14,791.05 : x
  2. Step 2: Convert to fraction form
    20,769.93/28,621.31 = 14,791.05/x
  3. Step 3: Cross multiply
    20,769.93x = 28,621.31 × 14,791.05
  4. Step 4: Simplify right side
    20,769.93x = 423,339,153.32
  5. Step 5: Solve for x
    x = 423,339,153.32/20,769.93
  6. Step 6: Final answer
    x = 20,382.31

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1.5x scale

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.