Home / 30,814.30-42,523.68-16,667.20

Finding the Fourth Proportional to 30,814.30, 42,523.68 and 16,667.20

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Solution

The fourth proportional to 30,814.30, 42,523.68 and 16,667.20 is: 23,000.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,814.30 : 42,523.68 = 16,667.20 : x
  2. Step 2: Convert to fraction form
    30,814.30/42,523.68 = 16,667.20/x
  3. Step 3: Cross multiply
    30,814.30x = 42,523.68 × 16,667.20
  4. Step 4: Simplify right side
    30,814.30x = 708,750,679.30
  5. Step 5: Solve for x
    x = 708,750,679.30/30,814.30
  6. Step 6: Final answer
    x = 23,000.71

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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.