Home / 30,758.10-42,450.21-17,331.95

Finding the Fourth Proportional to 30,758.10, 42,450.21 and 17,331.95

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Solution

The fourth proportional to 30,758.10, 42,450.21 and 17,331.95 is: 23,920.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,758.10 : 42,450.21 = 17,331.95 : x
  2. Step 2: Convert to fraction form
    30,758.10/42,450.21 = 17,331.95/x
  3. Step 3: Cross multiply
    30,758.10x = 42,450.21 × 17,331.95
  4. Step 4: Simplify right side
    30,758.10x = 735,744,704.96
  5. Step 5: Solve for x
    x = 735,744,704.96/30,758.10
  6. Step 6: Final answer
    x = 23,920.36

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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.