Home / 30,912.56-42,659.12-16,765.44

Finding the Fourth Proportional to 30,912.56, 42,659.12 and 16,765.44

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Solution

The fourth proportional to 30,912.56, 42,659.12 and 16,765.44 is: 23,136.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,912.56 : 42,659.12 = 16,765.44 : x
  2. Step 2: Convert to fraction form
    30,912.56/42,659.12 = 16,765.44/x
  3. Step 3: Cross multiply
    30,912.56x = 42,659.12 × 16,765.44
  4. Step 4: Simplify right side
    30,912.56x = 715,198,916.81
  5. Step 5: Solve for x
    x = 715,198,916.81/30,912.56
  6. Step 6: Final answer
    x = 23,136.19

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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.