Home / 30,567.21-42,182.20-17,138.42

Finding the Fourth Proportional to 30,567.21, 42,182.20 and 17,138.42

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Solution

The fourth proportional to 30,567.21, 42,182.20 and 17,138.42 is: 23,650.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,567.21 : 42,182.20 = 17,138.42 : x
  2. Step 2: Convert to fraction form
    30,567.21/42,182.20 = 17,138.42/x
  3. Step 3: Cross multiply
    30,567.21x = 42,182.20 × 17,138.42
  4. Step 4: Simplify right side
    30,567.21x = 722,936,260.12
  5. Step 5: Solve for x
    x = 722,936,260.12/30,567.21
  6. Step 6: Final answer
    x = 23,650.71

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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.