Home / 26,428.35-39,620.30-12,380.97

Finding the Fourth Proportional to 26,428.35, 39,620.30 and 12,380.97

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Solution

The fourth proportional to 26,428.35, 39,620.30 and 12,380.97 is: 18,561.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,428.35 : 39,620.30 = 12,380.97 : x
  2. Step 2: Convert to fraction form
    26,428.35/39,620.30 = 12,380.97/x
  3. Step 3: Cross multiply
    26,428.35x = 39,620.30 × 12,380.97
  4. Step 4: Simplify right side
    26,428.35x = 490,537,683.79
  5. Step 5: Solve for x
    x = 490,537,683.79/26,428.35
  6. Step 6: Final answer
    x = 18,561.04

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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.