Home / 12,821.24-17,692.34-7,155.56

Finding the Fourth Proportional to 12,821.24, 17,692.34 and 7,155.56

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Solution

The fourth proportional to 12,821.24, 17,692.34 and 7,155.56 is: 9,874.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.24 : 17,692.34 = 7,155.56 : x
  2. Step 2: Convert to fraction form
    12,821.24/17,692.34 = 7,155.56/x
  3. Step 3: Cross multiply
    12,821.24x = 17,692.34 × 7,155.56
  4. Step 4: Simplify right side
    12,821.24x = 126,598,600.41
  5. Step 5: Solve for x
    x = 126,598,600.41/12,821.24
  6. Step 6: Final answer
    x = 9,874.13

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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.