Home / 20,767.97-31,101.06-18,771.05

Finding the Fourth Proportional to 20,767.97, 31,101.06 and 18,771.05

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Solution

The fourth proportional to 20,767.97, 31,101.06 and 18,771.05 is: 28,110.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.97 : 31,101.06 = 18,771.05 : x
  2. Step 2: Convert to fraction form
    20,767.97/31,101.06 = 18,771.05/x
  3. Step 3: Cross multiply
    20,767.97x = 31,101.06 × 18,771.05
  4. Step 4: Simplify right side
    20,767.97x = 583,799,396.81
  5. Step 5: Solve for x
    x = 583,799,396.81/20,767.97
  6. Step 6: Final answer
    x = 28,110.57

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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.