Home / 28,406.20-42,621-11,769.58

Finding the Fourth Proportional to 28,406.20, 42,621 and 11,769.58

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Solution

The fourth proportional to 28,406.20, 42,621 and 11,769.58 is: 17,659.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,406.20 : 42,621 = 11,769.58 : x
  2. Step 2: Convert to fraction form
    28,406.20/42,621 = 11,769.58/x
  3. Step 3: Cross multiply
    28,406.20x = 42,621 × 11,769.58
  4. Step 4: Simplify right side
    28,406.20x = 501,631,269.18
  5. Step 5: Solve for x
    x = 501,631,269.18/28,406.20
  6. Step 6: Final answer
    x = 17,659.22

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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.