Home / 28,518.48-39,349.32-15,942.80

Finding the Fourth Proportional to 28,518.48, 39,349.32 and 15,942.80

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Solution

The fourth proportional to 28,518.48, 39,349.32 and 15,942.80 is: 21,997.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,518.48 : 39,349.32 = 15,942.80 : x
  2. Step 2: Convert to fraction form
    28,518.48/39,349.32 = 15,942.80/x
  3. Step 3: Cross multiply
    28,518.48x = 39,349.32 × 15,942.80
  4. Step 4: Simplify right side
    28,518.48x = 627,338,338.90
  5. Step 5: Solve for x
    x = 627,338,338.90/28,518.48
  6. Step 6: Final answer
    x = 21,997.61

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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.