Home / 30,567.66-42,185.10-17,143.21

Finding the Fourth Proportional to 30,567.66, 42,185.10 and 17,143.21

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Solution

The fourth proportional to 30,567.66, 42,185.10 and 17,143.21 is: 23,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,567.66 : 42,185.10 = 17,143.21 : x
  2. Step 2: Convert to fraction form
    30,567.66/42,185.10 = 17,143.21/x
  3. Step 3: Cross multiply
    30,567.66x = 42,185.10 × 17,143.21
  4. Step 4: Simplify right side
    30,567.66x = 723,188,028.17
  5. Step 5: Solve for x
    x = 723,188,028.17/30,567.66
  6. Step 6: Final answer
    x = 23,658.60

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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.