Home / 30,983.22-42,756.30-16,836.12

Finding the Fourth Proportional to 30,983.22, 42,756.30 and 16,836.12

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Solution

The fourth proportional to 30,983.22, 42,756.30 and 16,836.12 is: 23,233.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,983.22 : 42,756.30 = 16,836.12 : x
  2. Step 2: Convert to fraction form
    30,983.22/42,756.30 = 16,836.12/x
  3. Step 3: Cross multiply
    30,983.22x = 42,756.30 × 16,836.12
  4. Step 4: Simplify right side
    30,983.22x = 719,850,197.56
  5. Step 5: Solve for x
    x = 719,850,197.56/30,983.22
  6. Step 6: Final answer
    x = 23,233.55

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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.