Home / 30,982.55-42,754.77-16,835.09

Finding the Fourth Proportional to 30,982.55, 42,754.77 and 16,835.09

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Solution

The fourth proportional to 30,982.55, 42,754.77 and 16,835.09 is: 23,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,982.55 : 42,754.77 = 16,835.09 : x
  2. Step 2: Convert to fraction form
    30,982.55/42,754.77 = 16,835.09/x
  3. Step 3: Cross multiply
    30,982.55x = 42,754.77 × 16,835.09
  4. Step 4: Simplify right side
    30,982.55x = 719,780,187.11
  5. Step 5: Solve for x
    x = 719,780,187.11/30,982.55
  6. Step 6: Final answer
    x = 23,231.80

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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.