Home / 28,866.78-39,840.86-16,767.61

Finding the Fourth Proportional to 28,866.78, 39,840.86 and 16,767.61

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Solution

The fourth proportional to 28,866.78, 39,840.86 and 16,767.61 is: 23,142.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,866.78 : 39,840.86 = 16,767.61 : x
  2. Step 2: Convert to fraction form
    28,866.78/39,840.86 = 16,767.61/x
  3. Step 3: Cross multiply
    28,866.78x = 39,840.86 × 16,767.61
  4. Step 4: Simplify right side
    28,866.78x = 668,035,944.86
  5. Step 5: Solve for x
    x = 668,035,944.86/28,866.78
  6. Step 6: Final answer
    x = 23,142.03

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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.