Home / 12,457.05-18,689.19-3,692.13

Finding the Fourth Proportional to 12,457.05, 18,689.19 and 3,692.13

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Solution

The fourth proportional to 12,457.05, 18,689.19 and 3,692.13 is: 5,539.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457.05 : 18,689.19 = 3,692.13 : x
  2. Step 2: Convert to fraction form
    12,457.05/18,689.19 = 3,692.13/x
  3. Step 3: Cross multiply
    12,457.05x = 18,689.19 × 3,692.13
  4. Step 4: Simplify right side
    12,457.05x = 69,002,919.07
  5. Step 5: Solve for x
    x = 69,002,919.07/12,457.05
  6. Step 6: Final answer
    x = 5,539.27

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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.