Home / 28,617.24-42,918.27-20,272.62

Finding the Fourth Proportional to 28,617.24, 42,918.27 and 20,272.62

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Solution

The fourth proportional to 28,617.24, 42,918.27 and 20,272.62 is: 30,403.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,617.24 : 42,918.27 = 20,272.62 : x
  2. Step 2: Convert to fraction form
    28,617.24/42,918.27 = 20,272.62/x
  3. Step 3: Cross multiply
    28,617.24x = 42,918.27 × 20,272.62
  4. Step 4: Simplify right side
    28,617.24x = 870,065,778.77
  5. Step 5: Solve for x
    x = 870,065,778.77/28,617.24
  6. Step 6: Final answer
    x = 30,403.55

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1.5x scale

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.