Home / 31,108.88-42,929.32-16,962

Finding the Fourth Proportional to 31,108.88, 42,929.32 and 16,962

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Solution

The fourth proportional to 31,108.88, 42,929.32 and 16,962 is: 23,407.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,108.88 : 42,929.32 = 16,962 : x
  2. Step 2: Convert to fraction form
    31,108.88/42,929.32 = 16,962/x
  3. Step 3: Cross multiply
    31,108.88x = 42,929.32 × 16,962
  4. Step 4: Simplify right side
    31,108.88x = 728,167,125.84
  5. Step 5: Solve for x
    x = 728,167,125.84/31,108.88
  6. Step 6: Final answer
    x = 23,407.05

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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.