Home / 20,588.28-28,408.74-11,635.71

Finding the Fourth Proportional to 20,588.28, 28,408.74 and 11,635.71

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Solution

The fourth proportional to 20,588.28, 28,408.74 and 11,635.71 is: 16,055.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588.28 : 28,408.74 = 11,635.71 : x
  2. Step 2: Convert to fraction form
    20,588.28/28,408.74 = 11,635.71/x
  3. Step 3: Cross multiply
    20,588.28x = 28,408.74 × 11,635.71
  4. Step 4: Simplify right side
    20,588.28x = 330,555,860.11
  5. Step 5: Solve for x
    x = 330,555,860.11/20,588.28
  6. Step 6: Final answer
    x = 16,055.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.