Home / 30,997.80-42,776.46-16,851

Finding the Fourth Proportional to 30,997.80, 42,776.46 and 16,851

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Solution

The fourth proportional to 30,997.80, 42,776.46 and 16,851 is: 23,254.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,997.80 : 42,776.46 = 16,851 : x
  2. Step 2: Convert to fraction form
    30,997.80/42,776.46 = 16,851/x
  3. Step 3: Cross multiply
    30,997.80x = 42,776.46 × 16,851
  4. Step 4: Simplify right side
    30,997.80x = 720,826,127.46
  5. Step 5: Solve for x
    x = 720,826,127.46/30,997.80
  6. Step 6: Final answer
    x = 23,254.11

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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.