Home / 30,921.21-42,670.17-16,773.75

Finding the Fourth Proportional to 30,921.21, 42,670.17 and 16,773.75

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Solution

The fourth proportional to 30,921.21, 42,670.17 and 16,773.75 is: 23,147.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,921.21 : 42,670.17 = 16,773.75 : x
  2. Step 2: Convert to fraction form
    30,921.21/42,670.17 = 16,773.75/x
  3. Step 3: Cross multiply
    30,921.21x = 42,670.17 × 16,773.75
  4. Step 4: Simplify right side
    30,921.21x = 715,738,764.04
  5. Step 5: Solve for x
    x = 715,738,764.04/30,921.21
  6. Step 6: Final answer
    x = 23,147.18

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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.