Home / 26,207.69-39,278.71-20,639.04

Finding the Fourth Proportional to 26,207.69, 39,278.71 and 20,639.04

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Solution

The fourth proportional to 26,207.69, 39,278.71 and 20,639.04 is: 30,932.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,207.69 : 39,278.71 = 20,639.04 : x
  2. Step 2: Convert to fraction form
    26,207.69/39,278.71 = 20,639.04/x
  3. Step 3: Cross multiply
    26,207.69x = 39,278.71 × 20,639.04
  4. Step 4: Simplify right side
    26,207.69x = 810,674,745.34
  5. Step 5: Solve for x
    x = 810,674,745.34/26,207.69
  6. Step 6: Final answer
    x = 30,932.71

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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.