Home / 26,380.69-39,580.75-13,900.21

Finding the Fourth Proportional to 26,380.69, 39,580.75 and 13,900.21

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Solution

The fourth proportional to 26,380.69, 39,580.75 and 13,900.21 is: 20,855.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,380.69 : 39,580.75 = 13,900.21 : x
  2. Step 2: Convert to fraction form
    26,380.69/39,580.75 = 13,900.21/x
  3. Step 3: Cross multiply
    26,380.69x = 39,580.75 × 13,900.21
  4. Step 4: Simplify right side
    26,380.69x = 550,180,655.38
  5. Step 5: Solve for x
    x = 550,180,655.38/26,380.69
  6. Step 6: Final answer
    x = 20,855.43

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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.