Home / 28,721.80-43,115.10-17,041.60

Finding the Fourth Proportional to 28,721.80, 43,115.10 and 17,041.60

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Solution

The fourth proportional to 28,721.80, 43,115.10 and 17,041.60 is: 25,581.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.80 : 43,115.10 = 17,041.60 : x
  2. Step 2: Convert to fraction form
    28,721.80/43,115.10 = 17,041.60/x
  3. Step 3: Cross multiply
    28,721.80x = 43,115.10 × 17,041.60
  4. Step 4: Simplify right side
    28,721.80x = 734,750,288.16
  5. Step 5: Solve for x
    x = 734,750,288.16/28,721.80
  6. Step 6: Final answer
    x = 25,581.62

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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.