Home / 31,108.44-42,929.64-16,961.25

Finding the Fourth Proportional to 31,108.44, 42,929.64 and 16,961.25

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Solution

The fourth proportional to 31,108.44, 42,929.64 and 16,961.25 is: 23,406.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,108.44 : 42,929.64 = 16,961.25 : x
  2. Step 2: Convert to fraction form
    31,108.44/42,929.64 = 16,961.25/x
  3. Step 3: Cross multiply
    31,108.44x = 42,929.64 × 16,961.25
  4. Step 4: Simplify right side
    31,108.44x = 728,140,356.45
  5. Step 5: Solve for x
    x = 728,140,356.45/31,108.44
  6. Step 6: Final answer
    x = 23,406.52

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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.