Home / 12,457.36-18,680.58-3,692.80

Finding the Fourth Proportional to 12,457.36, 18,680.58 and 3,692.80

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Solution

The fourth proportional to 12,457.36, 18,680.58 and 3,692.80 is: 5,537.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.36 : 18,680.58 = 3,692.80 : x
  2. Step 2: Convert to fraction form
    12,457.36/18,680.58 = 3,692.80/x
  3. Step 3: Cross multiply
    12,457.36x = 18,680.58 × 3,692.80
  4. Step 4: Simplify right side
    12,457.36x = 68,983,645.82
  5. Step 5: Solve for x
    x = 68,983,645.82/12,457.36
  6. Step 6: Final answer
    x = 5,537.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.